Changes in 1.0.32:

* aven: Fixed font sizes in "Print Preview" and printouts.

* aven: In the print setup dialog, replaced "Orientation" radio buttons with
  "Plan" and "Elevation" buttons.

* aven: Fixed info box on printouts of elevations, tilted views, and
  extend elevations.

* aven: Added "fit on one page" option, and make it the default.

* aven: Reorder "Cancel", "Preview", "Print" buttons and make "Print" the
  default button.

* aven: Read settings back from the print dialog when the "Print" button is
  pressed (was only done for "Preview" previously).

* aven: Sorted out the initial size of the "Print Preview" window.

* aven: Fixed the window manager's close button on the "Print Preview" window
  - previously this was being ignored.

* aven: Sorted out initial survey scaling when loading a survey at startup.

* aven: Fixed the measuring line to work better when the survey tree is
  manipulated with keys.  Tweaked redrawing of the measuring line to be a
  smidgen more efficient.  Fixed the blob and ring size which were one
  pixel too small on Windows.

* aven: Added "System Information:" section to the "About" dialog to hold
  information useful when reporting bugs.  Currently it contains the wxWindows
  version, OS version, and colour depth information.

* aven: Changed the "About" dialog's "Close" button to be "OK" for consistency
  with pretty much every other application.

* aven: Added "File->Export as..." which integrates cad3d's functionality
  within aven.

* aven: Updated a few icons.

* cad3d: Added SVG export support from John Pybus

* (Unix version): Fixed to allow compilation with GCC 3.4

* (MS Windows version): Upgrade to using innosetup 4 for the installer
  (we were using innosetup 2).  This results in a much smaller download
  and the installer now translates itself into the currently set language.
  The installer will no longer work on Windows NT 3.51, but I seriously
  doubt anyone is still using that...

* Updates to German translation.

Changes in 1.0.31:

* (MS Windows version): Fixed problems with the new printing code by building
  with a newer version of wxWindows (2.5.2 instead of 2.4.1).

* aven: Fixed grid menu item so that it always correctly reflects whether the
  grid is enabled or not.

* aven: Minor improvements to appearance of a few toolbar icons.

* Updates to Catalan, French, Italian, Romanian, Slovak, and Spanish
  translations.

* cavern: Fixed Romanian message which was appearing in English .err files.

Changes in 1.0.30:

* aven: Added printing directly from Aven!

* aven: Fixed memory leak when showing the "About" dialog.

* (MacOS X version): Now installable from a disk image package.

* cavern: Equates are no longer considered when deciding which stations are
  flagged as surface and underground.

* Romanian translation mostly completed.

* (Unix version): Debian: Minor packaging tweaks.

Changes in 1.0.29:

* cad3d: Fixed problem with DXF files which stopped them loading with some
  drawing packages (introduced in 1.0.27).

* aven: Changed File->Exit to File->Quit.

* Removed some unused messages from the message files.

* (Unix version): Fixed SRPMs to build on RedHat 9 and Fedora Core 1 (patch
  from John Pybus).

* Romanian translation started.

* (Unix version): Debian: Fixed new lintian warnings about missing quotes in
  menu files.

Changes in 1.0.28:

* Fixed 3d file reading code to fix incorrect unpacking of compressed station
  names in a rare case.  Also checked other rare cases work correctly.

Changes in 1.0.27:

* cad3d: DXF output now puts surface legs, stations, and labels in separate
  layers.

* (Unix version): distribute desc-svxedit.txt.

Changes in 1.0.26:

* cavern: Fixed interleaved topofil data style - the length was always being
  calculated as zero.

* (Unix version): aven: "All Files" now shows files without extensions too.

* aven: added Ctrl+Q as shortcut for File->Exit.

* aven: depth colouring now uses a proper colour gradient.

* (MacOS X version): aven: the keyboard and mouse now work!  It turns out that
  we must apply resources *after* installing.

* (MacOS X version): aven: now works when run from the MacOS X Finder.

* (MacOS X version): look for message files and other resources relative to the
  binaries so that the user can install Survex from a disk image in the location
  of their choice.

* (MacOS X version): fixed not to try to build aven if wxWindows isn't
  installed.

* cad3d: fixed -e and -r options to not crash (the long versions have always
  worked).

* extend: fixed to initialise an internal structure - failing to do so was
  probably causing crashes on some platforms.

* Fixed standard graphics for "Note", "Warning", etc in the PostScript manual.

* Documentation updated.

* (Unix version): fixed svxedit man page which previously contained xcaverot
  documentation!

* test suite: check that cavern doesn't report "nan" or "NaN" for any values.

* (Unix version): fixed configure --enable-defaultlang=XX to work.

* (Unix version): fixed configure code to turn on lots of GCC warnings and fixed
  most of them.

* (MS Windows version): assorted tweaks to allow building with MS Visual C/C++.

Changes in 1.0.25:

* (MacOS X version): hopefully fixed building of aven.

* (Unix version): updated config.guess and config.sub so should build out of
  the box on more Unix platforms.

* (Unix version): Debian: added missing Build-Depends on xlibs-dev.

* (Unix version): RPMs: give up supplying binary RPMs due to apparently
  insurmountable technical problems.

Changes in 1.0.24:

* cavern: fixed LEVEL (broken since around 1.0.8) and added test case.

* cavern: corrected handling of declination in Compass DAT files and added test
  case; also added tests for other aspects of Compass DAT file reading.

* printps/printpcl: fixed blank page detection in some obscure cases.

* Documentation: started manual section on working with Compass data files.

* (Unix version): fixed compilation problems with aven and getopt.h on MacOS X
  (and probably some other Unix versions).

* (Unix version): Debian package now Build-Depends on gcc-3.2 and g++-3.2.

Changes in 1.0.23:

* Documentation: include 3d v3 file format description on MS Windows, MS DOS,
  and RISC OS too; include PNG graphics for manual on MS Windows; minor updates
  to manual.

* Prefer wxWindows 2.4 if it's available.

* (MacOS X version): detect MacOS X and look for MacOS X build of wxWindows;
  automatically add resource fork to aven binary.

* Disabled experimental support for Chinese (LANG=zh) - it isn't currently
  working and makes the printer drivers unusable on Chinese versions of MS
  Windows.

* (Unix version): tweaked debian packaging.

* cavern: Handling of "*:" at start of file wasn't fully fixed in 1.0.19.

Changes in 1.0.22:

* aven: Fixed handling of extended elevations (and other flat surveys) -
  they are meant to be "locked flat" but this wasn't fully working before.

* Documentation: 3d v3 file format description: fixed error in description of
  codes 0x01-0x0e; include it in binary packages (not only with the source
  code).

Changes in 1.0.21:

* cavern: when reading Compass DAT files, we now processes compass and clino
  backsights, and recognise the "X" flag which indicates a leg should be
  entirely ignored.  And we now report correct line number with errors in
  Compass .MAK files.

* cavern: if "*infer plumbs on", don't infer a plumb if the clino is
  +/- 90 degrees, but the backclino isn't (and vice versa).

* cavern: fixed 3dx output so it actually works with Chasm once more.

* cavern: don't allocate extra space needed for producing 3dx output for
  Chasm unless we're actually producing that output - saves about 8 bytes
  per station.

* cavern: removed slightly too keen sanity check which could misfire in very
  unusual circumstances.

* (MS Windows version): all .ico files except 3d.ico have been missing since
  1.0.17 (or maybe 1.0.16) - fixed.  You wouldn't notice this if you installed
  over an previous version.

Changes in 1.0.20:

* aven: update display when "Metric" or "Degrees" is toggled.

* cavern: fixed handling of compass and clino corrections in Compass survey
  data - these were interpreted as radians rather than degrees so the
  correction was about 57 times too large!)

* Improved handling of Compass PLT files - if the survey name is empty, don't
  insert a survey separator character.

* Documentation: fixed incorrect markup which resulted in a bogus footnote.

Changes in 1.0.19:

* cavern: you can now process Compass format survey data (.DAT and .MAK files) -
  these can even be linked into a Survex dataset with "*include fulford.dat" or
  "*include lech.mak" to allow processing of mixed datasets.

* cavern: major speedup (up to 60%) when reading in survey data containing
  a lot of stations in the same survey hierarchy level (which is how Compass
  files are handled).

* cavern: don't warn about a compass reading on a plumbed leg if the
  plumb was inferred and the compass reading is zero.

* cavern: reduced memory usage in code which reads a survey station name.

* cavern: reported CPU time would go negative if cavern ran for more than
  about 36 minutes (highly unlikely but not impossible on a slow machine
  with a large, highly interconnect survey) - fixed.

* cavern: avoid unnecessary work when --percentage isn't specified.

* cavern: Writing "*:" at the start of a .svx file would crash cavern - fixed
  and added test case.  This is an error anyway, but it shouldn't cause a
  crash.

* Don't distribute unused toolbar icons.

* Documentation: minor updates.

Changes in 1.0.18:

* (Unix version): Fixed "Process" action on .svx files.

* (Unix version): File associations: if svxedit isn't installed, run gnome-edit
  instead.

* (Unix version): In Debian packages, now include file associations and file
  icons in the survex package rather than survex-aven.

* (Unix version): File associations were missing from RPM packages; moved
  aven and svxedit man pages to their respective subpackages; moved aven icons
  to the aven subpackage.

* Documentation: added details of the 3d file format (version 3).

* Updated TODO list.

Changes in 1.0.17:

* (MS Windows version): Fixed "Open in SvxEdit" to work (and if tcl isn't
  install this action now falls back to using notepad).  SvxEdit now has
  its own icon.

* (Unix version): Install mime types, icons, and file associations for Gnome.
  Note: at present GMC doesn't seem to notice new files being created (e.g.
  Process on a .svx file creates .3d and .err files) - you have to manually
  refresh the view.

* Minor update to manual.

Changes in 1.0.16:

* (MS Windows version): Really fixed bug introduced in 1.0.14 which often stops
  programs from finding the message files.

* (MS Windows version): Remove any existing "Open" file association for .svx
  files.

Changes in 1.0.15:

* (MS Windows version): Fixed bug introduced in 1.0.14 which often stops
  programs from finding the message files.

* (MS Windows version): "Open in Notepad" is now the double-click action
  for .svx files once again, "Open in SvxEdit" is an action in the menu
  obtained with the right mouse button.

Changes in 1.0.14:

* svxedit: This is a Survex data entry editor from the therion team.  It needs
  tcl and wish installed - for MS Windows an installer is available for free
  from Activeware.

* Improved handling of Compass PLT files and CMAP xyz files - no longer change
  dots to spaces in survey and station names - instead use a space as the
  separator between survey name and station name.

* aven: when picking non-overlapping labels, show a slight preference to shorter
  labels with the aim of displaying more labels.

* aven: fixed hard to notice problem which could cause the cave to appear
  tilted sideways after a lot of manipulation.

* cavern: Modest speed improvement (0.5% for sample dataset).

* cavern: fixed a rarely sighted bug which caused erroneous error about some
  stations not being attached to a fixed point.

* cavern: fixed clino readings and DIRECTION to work in interleaved data.

* cavern: improved error reporting when an invalid value is given for a
  DIRECTION reading.

* cavern: fixed "singular matrix" error when very low SDs were specified.

* print*: if the --raw is used, the survey can now use the space this would
  have taken up.

* Reading of ASCII 3d files now copes with MSDOS/MS Windows line endings
  once again.  Added regression test for this.

* (MS Windows version): Programs run from the command line now find message
  files without SURVEXHOME needing to be set.

* Updated documentation.

Changes in 1.0.13:

* aven: Fixed bug which caused the occasional spurious leg to be shown
  connecting arbitrary stations.

* extend: try to extend along a survey, and make breaks where other surveys
  join.

* cavern: Number reading code reworked to allow repeat readings to be
  supported, but the actual repeat reading code is currently disabled,
  and everything should work exactly as before.

* Experimental support for Chinese (LANG=zh) - only a few messages are
  currently translated.

Changes in 1.0.12:

* diffpos: fixed to work on 64bit architectures.

* sorterr: fixed to work with more than 1024 traverses.

* Fixed handling of iso-8859-2 character set and MS Windows code page 1250
  (both cover Eastern European languages).

* (MS Windows version): install file associations for Compass .plt and .plf
  files and for CMAP .xyz files.  Also install the file icon for .plt and
  .plf files in case Compass isn't installed (thanks to Larry Fish for
  permission to include the icon).

* (Unix version): running an installed program with an explicit path works
  again.

* (Unix version): xcaverot: automatically switch on PDA mode if the screen is
  less than 640 pixels wide or less than 480 pixels high.

* (Unix version): minor portability improvements.

* Updates to Portuguese translation - all translations are now up-to-date.

Changes in 1.0.11:

* aven: improvements in 1.0.10 to the file type selector only work properly
  on MS Windows, and with wxGtk >= 2.3 on Unix (the latest stable release is
  2.2.9 where this doesn't work).  Fixed to work as well as possible on 2.2.9,
  and as intended on 2.3.

* aven: fixed so that loading PLT files works regardless of the current locale
  (previously it would fail for locales where the decimal character wasn't
  '.').

* aven: key actions during autorotation no longer temporarily pause
  autorotation.

* aven: switching to plan or elevation while rotating is now smooth.

* aven: removed undocumented and confusing "free rotation mode".

* (MS Windows version): aven: focus now set correctly after loading a file by
  double-clicking or from the command line.

* cad3d: write dummy passage dimensions to .plt files to avoid Compass bug.

* printwin/printps: now support coloured printouts.

* print*: fixed to work correctly with PLT files.

* extend: fixed to work correctly with PLT files.

* Updates to Italian translation.

* Minor documentation updates.

Changes in 1.0.10:

* (MS Windows version): aven: fixed assert failure upon turning on station
  names.

* aven: only add a file to the list of recently used files if it was opened
  successfully.

* aven: recognise ".plf" as a Compass PLT file too; and on Unix list "*.PLT",
  "*.PLF", "*.XYZ", and "*.3D" as well as the lowercase versions to help people
  who transfer files from MSDOS/MS Windows.

* cavern: fixed bogus warning triggered by "*begin abc.def" (I'm not sure
  that this should be valid, but the warning given wasn't appropriate).

* Fixed scaling problem when reading PLT file (feet->metres conversion
  factor was being applied backwards!)

* Fixed potential problem when reading or writing a 3d file which couldn't
  be opened.

* Translate dots to spaces in survey names in Compass PLT files.

* Better handling of PLT files which have a D command before any M command.

* Updates to German and Italian translations.

Changes in 1.0.9:

* aven: Fixed jerky start when auto-rotation begins.

* cavern: Fixed Direction reading - bug previously made it unusable.

* (MS Windows version): cad3d: fixed broken PLT output (had a double CR at the
  end of each line).

* (Unix version): RPMs now have the docs in /usr/share/doc and the man pages
  in /usr/share/man to conform with the FHS (and where RedHat packages put
  them).

* Updates to French, Spanish, Catalan, and Slovak translations.

Changes in 1.0.8:

* Slovak translation added; updated German, Catalan, and Spanish translations.

* aven: reduced memory usage by around 25% and increased speed and
  responsiveness.

* aven: rate of rotation and switching between plan and elevation now adjusted
  to the speed of redraw, so aven behaves in a similar way independent of the
  speed of the computer or size of the survey.

* aven: provide list of most recently loaded files (preserved between runs of
  the program).

* aven: settings for "Metric" and "Degrees" are preserved between runs.

* aven: moved some menu items from "View" to "Controls" as they probably
  belong there and the "View" menu was getting out of hand.

* aven: cursor keys now translate cave in the same way the mouse does (i.e. now
  work as in caverot and xcaverot).

* aven: eliminated the "twinkling label" effect when dragging the cave with the
  right mouse button.

* aven: the measuring line moves much more smoothly now: the mouse cursor now
  snaps to the nearest station, rather than just a near station; and when the
  line moves, we now only redraw the affected area of the window.

* aven: resolved annoying limit on zooming in on large surveys.  This was a
  crude way of preventing random lines due to overflow in the windowing system.
  Aven now clips lines itself at high zoom levels, and limits zoom in to
  approximately 1mm/pixel.

* aven: zoom in/out with keyboard wasn't subject to any limits - now restricted
  to sane values as with zoom in/out with the mouse.

* print*: added --raw switch to turn of info box, scale bar, and page footer.
  This can be useful if you want to import the output into another application.

* print*: improved output when --no-border is used.

* printpcl/printdm: Added new .ini setting "font_bitmap" which allows the user
  to choose between alternative fonts.  Current we supply "default" and "bold".

* printps/printhpgl: Fixed --skip-blanks which would incorrectly skip non-blank
  pages on rare occasions.

* cavern: added support for BackCompass and BackClino.

* cavern: implemented "*units clino percent".

* cavern: added "*infer exports on".  Any stations seen while this is on will
  have the necessary *export-s inferred when accessed from outside their
  own survey.  This allows linking a survey which uses *export to one which
  doesn't.  It's also useful for a maze cave where so many stations can
  be linked to that listing them explicitly isn't desirable.

* cavern: N-S, E-W, and vertical ranges now only count stations which are in
  underground surveys.

* cavern: *infer plumbs wasn't inferring -90 to be DOWN - fixed.

* cavern: *infer was giving an internal error if the argument was unknown -
  now it gives the correct error message.

* cavern: fixed handling of omitted clino readings when OMIT is *set to be
  different from MINUS and PLUS (new test omitclino).

* cavern: fixed a bogus warning for any station which was only used in a line
  of data which was rejected because of an error.

* cavern: added error if the *units factor is zero (e.g. "*units tape 0 feet").

* cavern: removed the ill-thought-out and never implemented LENGTHOUTPUT
  and ANGLEOUTPUT quantities.

* cavern: resolved mismatch between bcra5.svx and the default SDs, and the
  odd values in bcra3.svx.  We are now interpreting the BCRA limits as 2
  standard deviations (previously bcra5.svx used 3 sds, bcra3 used 3.33 sds for
  tape and position, and .75 sds for compass and clino, and cavern used 1 sd
  by default).

* ChangeLog now only includes entries since the previous release (the full file
  is 220K or so, and of interest to very few people).  MSDOS and MS Windows
  versions now comfortably fit on a 1.44M floppy once again.

* Test suite now checks that all programs will run successfully with "--help"
  and with "--version".  This should avoid problems such as that which broke
  the printer drivers in 1.0.4-1.0.6.

* (Unix version): uninstalled binaries now use the path they are run with to
  find support files, which means SURVEXHOME is no longer required, and has
  been removed.

Changes in 1.0.7:

* print*: halted with a failed assertion in 1.0.4-1.0.6.

Changes in 1.0.6:

* aven: "Reverse Controls" now works as in xcaverot and caverot.

* aven: free rotation mode (engage by pressing control while left dragging,
  exit with Delete) improved.

* aven: using File->Open when a file was already loaded caused a crash
  if a station was "grey highlighted" in the survey tree - fixed.

* aven: added hourglass for "find" operation.

* aven: re-enabled loading of files by drag-and-drop (accidentally disabled
  in 1.0.4 and 1.0.5).

* aven: improved handling of flat surveys (e.g. output of extend, surveys
  with no clino information).

* aven: surveys with stations but no legs no longer cause the labels and
  crosses buttons to behave oddly.

* aven: removed quite a bit of unused and superfluous code.

* Spell-checked documentation.

Changes in 1.0.5:

* Fixed bug in img_open_survey() which could cause a crash if you tried to
  open an unrecognised file (i.e. not .3d, .pos, .plt, or .xyz format).

* North and East were the wrong way round when reading in .plt files.

* cad3d: Improved .plt file output a little - there's probably enough file
  structure for Compass to read them now.

* Documentation updates.

Changes in 1.0.4:

* extend: previously only kept one name for an equated group of stations in the
  extended .3d file; now keeps all the names.

* cad3d: if an output filename is given, use its extension to pick the default
  output format.

* aven: movement with keyboard is now accelerated by Shift as in caverot.

* print*: --no-borders fixed to work as documented; --no-cutlines added to
  turn off the dashed lines where pages join on multi-page printouts.

* aven: tracked down two uninitialised variables which seems to fix the
  failure to load a survey on startup which some people have been experiencing
  on Microsoft Windows.

* aven: code cleaned up - should improve performance a little.

* img routines: img_rewind() now returns a value indicating success/failure.

* Improvements to .plt file reading, notably that distances in the file are
  now interpreted as being in feet rather than metres.  Also .plt files should
  now be recognised even with a different extension, and we cope with an odd
  special case better.

* Added support for reading CMAP XYZ files.  There are two variants of these
  - the "shot" format is fully implemented, the "station" format currently
  just reads the station names and positions - the legs are ignored (sadly
  the sample files I have do not match the format specification).

* (MacOS X version): aven: aven now builds on MacOS X - we just need to sort
  out packaging now...

* (MSDOS version): upgraded graphics library used to Allegro 4.0.1.

* Documentation updates.

Changes in 1.0.3:

* aven: you can now select distances to be displayed in feet (or miles when
  you zoom right out) instead of metres, and angles to be in grads instead
  of degrees.

* aven: show altitude of mouse pointer when in elevation view.

* cad3d: fixed bug which caused --plt to crash on some platforms.

* print*: added "Printing to `XXX'..." message to say where output is being
  written.

* Updated French translation; minor updates to other translations (mostly
  sorting out clashing menu shortcuts in aven).

* (Unix version): assorted portability tweaks.

Changes in 1.0.2:

* printdm/printpcl/printwin: take notice of font_size_labels setting in
  print.ini etc.

* cavern: Topofil can now be used with DIVING and CYLPOLAR styles; TOPOFIL
  style is now synonymous with NORMAL.

* cavern: *INFER EQUATES and *DATA TOPOFIL now work together correctly.

* cavern: *FIX with 3 standard deviations but no covariances now works.

* (MacOS X version): command line programs now build.  We're working on Aven.

* Updates to the Catalan and Spanish translations.

* xcaverot: documented environmental variables XCAVEROT_INDICATOR_RADIUS and
  XCAVEROT_FONTNAME.

* cad3d: added --plt option to produce crude approximation to Compass .plt
  files - should be good enough for reading into Carto.

* img library enhanced to allow Compass .plt files to be read as if they were
  .3d files.

Changes in 1.0.1:

* (MS Windows version): printwin: fixed sizes of cross and page alignment
  ticks.

* Updates to the Portuguese and Italian translations.

Changes in 1.0.0:

* Fixed --survey option supported by many programs which was broken in 0.99.

* aven: altered colours of "fixed points" and "entrances" buttons to match
  the coloured blobs used to indicate them.

* (MS Windows version): aven: changed current point highlighting in the
  survey tree to use a light grey background rather than bold (bold causes
  the text to "wriggle" as the highlight runs up or down).

* (MS Windows version): file icons now have transparent backgrounds.

* survex: removed conversion wrapper - you should use "cavern file.svx"
  instead of "survex file.svx".

* (Unix version): GCC 2.95 sometimes fails with an internal error when trying
  to compile gfxcore.cc - if it does, the Makefile will now try recompiling
  with a lower optimisation level.

* (Unix version): when doing an "in directory" build from source, the HTML
  manual is now installed in its own subdirectory as when doing a non
  "in directory" build.

* German translation now completely up-to-date.

Changes in 0.99:

* Fixed bug in .3d file reading code which would incorrectly reconstruct
  the survey hierarchy in rare cases.

* (MS Windows version): aven: fixed redraw problem for "N found".

* (MS Windows version): minor tweaks to .err, .pos, and .svx file icons.

* (Unix version): aven: Highlight of current station restores old background
  colour correctly rather than assuming it's white.

* aven: Resolved a number of menu shortcut clashes.

* (RISC OS version): fixed automatic detection of language.

* cavern: improved error reporting from *data; better handling of some
  incorrect usages of *sd and *units.

* Italian translation updated.

Changes in 0.99-prerelease9:

* aven: Side Panel can now be dragged or toggled shut and then reopened
  again; double-clicking on the divider now maximises the survey window rather
  than the side panel.

* aven: .3d files can now be loaded using "drag and drop" from MS Windows
  Explorer, and X filemanagers which support XDND (e.g. Konqueror).

* aven: fixed problems with selection handling in survey tree.

* aven: Escape cancels distance measuring line; suppress distance measuring
  line during auto-rotation and animated tilting.

* aven: entrance blobs now green to distinguish them from stations matching
  search.

* aven: problems with dragging scalebar fixed.

* (MS Windows version): aven: Loading file on start-up now works!

* (MS Windows version): aven: Delete now works in the search box.

* (Unix version): aven: Highlight current station in tree with grey background
  (don't seem to be able to use bold like we do on MS Windows).

* cavern: Fixed handling of interleaved nosurvey data.

* cavern: Diving and cylpolar styles now take DEPTHCHANGE where they used to
  take DZ.

* (MS Windows version): Installer now uses a different compression
  method (bzip2) which reduces the download size by about 5% (and 
  should help keep the installer small enough to fit on a 1.44M floppy).
  Bzip2 is a little slower to uncompress, but not appreciably so on the
  machines I've checked it on.

* (MS Windows version): Should now install without errors for a
  non-admin user on MS Windows NT/2000/XP.

* (MS Windows version): Installer should now allow installation on NT 3.51.

* Updated manual (notably added documentation for interleaved data styles).

* German and Brazilian Portuguese translations updated.

Changes in 0.99-prerelease8:

* aven: Ctrl + Arrow keys is now the preferred way to rotate and tilt
  (easier to remember than "C"/"V" and "'"/"/").

* aven: survey pane now gets initial focus so you no longer have to
  click on it before key presses are recognised.

* (MS Windows version): aven: fixed problems with some keys being
  impossible to enter in search box, or not being recognised in survey
  pane.

* (MS Windows version): aven: wxWindows messages files were missing.  We
  now include them for languages which Survex also supports.

* (MSDOS version): caverot: Shift and/or Ctrl + Arrow keys now works.

* aven: Close button in About box is now always right in the bottom right
  corner.

* Display copyright symbol rather than (C) where the current character set
  allows it.

* (MSDOS version): caverot: default to 320x200 when running under
  Microsoft Windows 2000 and XP as we already do on NT.

* (MSDOS version): fixed problem when running on DOS outside MS Windows.

* (MSDOS version): detect current codepage rather than assuming it's 850.
  We now support codepages 437 and 850 (the common ones) - for other
  codepages we fall back to using 7-bit ASCII.

* (Unix version): aven: now compiles cleanly with GCC3.0.

Changes in 0.99-prerelease7:

* (MS Windows version): aven was missing from 0.99-prerelease6
  (if you installed over an old version you'd have kept the old aven).

* caverot/xcaverot: Ctrl + Arrow keys is now the preferred way to
  rotate and tilt (easier to remember than "C"/"V" and "'"/"/").

* xcaverot: Shift-ed movement keys now work faster as in caverot.

* cavern: fixed *calibrate depth/todepth/fromdepth/dz and *units dz to
  work in data styles diving and cylpolar.

* cavern: fixed handling of malformed *data commands.

* Various documentation clarifications.

Changes in 0.99-prerelease6:

* aven: fixed bogus lines caused by coordinate wrap-around; fixed
  problem in repeated zoom with [ or ]; tweaked layout and auto-sizing
  of left panel; station search now case insensitive; regexp search
  enabled; suppressed message box when wxWindows doesn't support the
  language Survex is set to use; fixed obscure crash in search
  highlighting; added "rubber band" between measured stations;
  Improved choice of menu short-cuts in translations.

* (MS Windows version): don't include plain text versions of docs; fixed
  default action for 3d files to be "Open".

* (MSDOS version): include text docs.

* cavern: more intelligent and less verbose reporting of errors in nested
  included files (inspired by GCC 3.0).

* cavern: improved reporting of syntax errors in survey data.

* print*: improved reporting of invalid scales; interpret a single
  number less than one as the scale in the obvious way (so "0.001"
  means "1:1000").

* print*: "--crosses" no longer prevents "--station-names" from working.

* print*: if running interactively, prompt for what elements to plot
  when run so MS Windows users don't have to resort to the command line.

* Improved documentation for print.ini; Other minor documentation updates.

* (Unix version) configure auto-probe for wxWindows updated to cope
  with wxWindows version 2.2.8 (still works with older versions too).

* Diving and cylpolar styles now accept dz (change in depth) rather than
  requiring absolute depths and taking the difference.

Changes in 0.99-prerelease5:

* aven: improved initial sizing of window; "Toggle rotation" toolbar
  icon now works; handle files with only stations better; presentation
  code disabled for 1.0; releasing mouse over menubar now ends drag;
  don't highlight hidden stations; accelerator problems fixed; find now
  works.

* (MS Windows version) aven: fixed crash on File/Open when a file was
  already loaded.

* cavern: After *solve, reused points are no longer written to the .3d
  file a second time.

* cavern: Warn that the undocumented extra "omit" allowed by *data is
  deprecated.

* cavern: Give error if standard deviation argument to *sd isn't
  positive.

* Consistent capitalisation of --help option descriptions.

Changes in 0.99-prerelease4:

* Minor improvements to manual and Unix man pages.

* printps/printhpgl/printwin: --skip-blanks fixed.

* printhpgl: fixed paper size for A1 landscape (was actually A2
  portrait!)

* (MSDOS version): graphics in HTML manual were corrupted (by being
  packed as text).

* (RISC OS version): graphics were missing from HTML manual.

* (RISC OS version and 286 DOS version): fixed programs to report
  themselves as part of "Survex" rather than "@PRETTYPACKAGE@".

* (MSDOS version): pick a default language for messages by looking at the
  currently set country.

* (Unix version): Improved test for whether build needs librx - before
  it was used if it was present, even if it wasn't needed.

* (Unix version): Assorted minor debian tweaks.

Changes in 0.99-prerelease3:

* Documentation rearranged.  Some sections which covered the same
  ground have been merged, and the documentation for each program is
  now available as a man page under Unix.

* (Unix version): Fixed problem with incomplete versions being
  specified in debian package dependencies.

* (Unix version): Fixed problems with not having librx on Linux (it's
  now built into libc).

Changes in 0.99-prerelease2:

* aven: fixed bug which caused occasional crash during mouse movement;
  station identifying didn't work after a resize until the survey was
  moved.

* Asking for messages in language en_GB now tries language en as it
  was meant to.

* printps/printhpgl/printwin: fixed typo which made --skip-blanks get
  it wrong in some rare cases.

* (Unix version): Added man pages for 3dtopos and sorterr.

* (Unix version): More minor tweaks to debian packages.

* Include images with HTML documentation; other minor documentation
  changes.

Changes in 0.99-prerelease1:

* Major clean-up of Survex Manual; renamed from "svxdocs" to "manual".

* Text documentation converted to HTML; BUGS and TODO merged, ZOMBIES
  removed.

* Include HTML documentation overview page and manual in all versions
  (was only included in MS Windows before).

* aven: added new functionality: toolbar, side panel with survey tree,
  find station, measure distance between two stations, click on
  station to centre.

* aven: can now create presentations consisting of a set of views with
  movements between them.  Useful for using aven as a "slide show" in
  a conference talk.

* aven: handles loading file from command line better.

* cavern: added error checks for "*flags" (with no arguments) and
  "*flags not".

* cavern: you can now specify optional covariances to *FIX.

* cavern: parser fixed to recover from errors as intended in a few
  situations where it was failing to.

* cavern: implemented covariances for diving data.

* cavern: added "cylpolar" data style - similar to diving, except the
  tape is measured horizontally rather than along the slope of the leg.

* cavern: complain about *export-ing or *entrance-ing a station which
  is never used.

* cavern: complain about *export after a *begin without an argument.

* cavern: use *title only if at top of survey tree, else generate
  title from filename(s).

* cavern: removed dummy *lrud command which was added for tunnel but
  isn't used by tunnel.

* cavern: round coordinates to nearest cm when writing .3d file.

* cavern: fixed reporting of node stats for stations fixed with error
  estimates.

* cavern: no longer generate a .inf file - the .log file generated by
  the --log option makes the .inf file obsolete.

* cavern: only apply special pathname handling to filenames in
  *include, not those on the command line.

* cavern: *date now checks its argument.  It expects an ISO format date
  (e.g. 2001.09.13) or range (e.g. 2001.09.12-2001.09.13).  For cases
  where the exact date isn't know, the day and month can be omitted -
  e.g. 2001.09 and 2001 are also valid.

* cavern: --new-format renamed to --chasm-format.

* print*: If restricting to a subsurvey, use that survey name for the
  title of the printout.

* print*: Detect .3d files produced by extend and handle them more
  appropriately (don't ask for view or bearing, and modify info box
  on printout).

* print*: --skip-blanks now works on printwin/printpcl/printps;
  --skip-blanks now forces --no-border.

* printps: thinner lines by default (0.1 points rather than 0.5).

* printdm: added --calibrate option to print calibration page; if
  there's no calibration in the .ini file, refuse to print (apart
  from calibration pages) rather than printing to the wrong scale.

* printwin: removed --output option - there is no output file.

* extend: wasn't picking start station as documented - fixed and
  also enhanced to try to find an entrance with legs first.

* survex: conversion wrapper doesn't use --output unless it is actually
  needed, and displays corresponding cavern command line, and (if
  appropriate) file.

* cad3d: added --reduction option (from Leandro) which allows sketch
  output to be scaled down (default scale is 1:500); grid in sketch
  file is now visible by default; default output now goes in the
  current directory. 

* cad3d/3dtopos/sorterr: delete output file if there's an error
  writing to it.

* 3dtopos: minor improvements to sort order.

* hto2svx, svx2hto: Removed HTO support - Survex appears to be the
  only released software to ever have provided support, and an
  exchange format that nobody else supports is useless.

* xcaverot: report more detailed error when .3d file can't be loaded.

* `program --version' now works even if message file can't be found.

* (Unix version): Fixed attempt to load messages from
  "DEFAULTLANG.msg" if both SURVEXLANG and LANG were unset.

* Much more rigorous checking for operating system errors when reading
  and writing files.

* (RISC OS version): query Territory module to find currently selected
  language, and use that for messages.

* (UNIX version): man pages now have "Survex <version number>" on them;
  fixed minor flaws in man pages.

* Distinguish between a "bad" .3d file and one which has a newer
  revision of the format than we understand.

* img library can now read .pos files as if they were .3d files with
  just stations in, so all programs which can read .3d files can also
  now read .pos files.

* Expanded testsuite further.

* French, Brazilian Portuguese, and German translations brought
  almost completely up-to-date.

* (Unix version): Lots of little improvements to debian packages
  (mostly from Wookey).

Changes in 0.98:

* (MS Windows version): New icons for .svx, .pos, and .err files.
  Tweaked .3d icon to work better in 256 colour modes.

* Added tests for `*infer plumbs' and `*infer equates'.

Changes in 0.98-prerelease6:

* printwin: fixed new bug introduced in 0.98-prerelease4 which caused
  an internal error.

* printwin: exit cleanly if no printer drivers are installed.

* aven: surface surveys weren't being drawn when viewing from above
  (bug introduced in recent version).

* aven/caverot/xcaverot/print*/cadgen/extend/diffpos/3dtopos: --survey
  command line option once more trims specified prefix from station
  names like it did in xcaverot/caverot in 0.98-prerelease4.

* sorterr: Added --replace option to sort the .err file and replace
  the original with the sorted version (for use by MS Windows file
  associations); cope with empty .err file.

* cavern: Added --log option to send output to a .log file.

* cavern: --quiet no longer suppresses node statistics.

* extend: give up if the .3d file is truncated or corrupted part way
  through.

* (MS Windows version): sorterr.exe and 3dtopos.exe were missing;
  improvements to documentation; assorted fixes and improvements to
  file associations.

* print*: reduced memory usage.

* Fixed dropping of first character of survey station names when
  reading old .3d files.

* (MS Windows version): aven.exe wasn't rebuilt for 0.98-prerelease -
  fixed the dodgy script.

Changes in 0.98-prerelease5:

* aven/print*/cadgen/extend/diffpos/3dtopos: Added --survey command
  line option to restrict the operation of the command to a sub-survey
  in the .3d file.

* aven: initial scaling now ignores unused fixed points (unless there
  are no legs at all), and scales survey so it fits inside window.

* aven: can now load a survey with no legs, only stations.

* aven: --version now works, and --help produces more helpful output.

* cavern: fixed bug with eating first character of line after
  interleaved data; corrected line numbers in some situations
  involving interleaved data.

* cavern: fixed problem with points fixed with errors.

* cavern: *title without quotes now stops at a comment; *title with no
  argument no longer allowed - use `*title ""' if you really mean to
  set an empty title.

* Minor documentation updates.

* 3dtopos: Fixed bug which resulted in station names and coordinates
  getting mismatched; output now defaults to current directory.

Changes in 0.98-prerelease4:

* diffpos: list added and deleted stations in sorted order; better
  error reporting.

* 3dtopos: removed hardcoded limit on number of stations (was 100000);
  better error reporting.

* Further tweaks to charset handling - look at LC_* as well as LANG;
  Check GUI codepage under MS Windows.

* cavern: Allow *copyright/*date/*instrument/*team/*title between
  *begin and *export.

* cavern: Fixed typo which prevented *instrument from being recognised
  as a valid command.

* cavern: removed option to produce ascii .3d files.

* cavern: on error, remove any existing .inf file for consistency with
  .3d and .err files.

* cavern: interleaved nosurvey data style now works; nosurvey legs now
  count as a "use" of a fixed point.

* cavern: give at most 5 warnings about use of any particular
  deprecated feature.  Otherwise processing an old dataset just gives
  an avalanche of warnings which buries any other warnings or errors.

* cavern: implemented `*infer equates'.

* aven: if a .3d file is truncated or corrupted part way through, aven
  would previously load part of it without complaint.  Fixed to
  complain and not load anything.

* printwin: fixed problem where it hung when waiting for input.

* print*: Added --output command line option to override the output
  setting in the .ini file (ignored by printwin).

* .3d files now store prefixes for legs (the prefix is taken from the
  "from" station of the leg);  Station names and leg prefixes in .3d
  files are now stored compressed.  Despite now storing prefixes for
  legs, .3d files are now typically 25%-33% smaller than before.

* xcaverot/caverot: Added --survey command line option which restricts
  the view to a sub-survey in the .3d file.  e.g.:
  "caverot --survey 161.dream all.3d"

* (MS Windows version): added explorer bindings for sorterr.

* cavern/xcaverot/sorterr: fixed --help output to include long options.

* Minor documentation updates.

Changes in 0.98-prerelease3:

* cavern/3dtopos: cavern no longer produces .pos files - they're
  mostly useful for hand plotting and are larger than the
  corresponding .3d files so most of the time they slow processing and
  then clutter up the disk.  A new utility 3dtopos produces a .pos
  file from a .3d file, and has the added benefit that it sorts names
  with numbers in numerically (i.e. 2 before 10).

* diffpos: the arguments can now be .pos or .3d file