- Fixed tidying and cleaning.

- Added documentation for xmllint command. ...

- Added sed call to add "automatically generated" to derived XML files.

- Added support for hiding and showing answers in general documents ...

(especially useful for assignments).

- Enabled multiple base documents.

- Removed temporary cropped PDFs from TIDY_FILES, as they are no longer ...

generated.

- Removed workarounds for Inkscape export issuse, as these now appear to ...

have been fixed.

- Changed TIDY_FILES to delete temporary cropped PDFs.

- Fixed half-broken pdfcrop rules.

- Altered pdfcrop rules slightly. ...

- Added general rule for R -> PDF.

- Added a blurred version of the watermark rule, and made both versions ...

consistent.

- Added rule for generating blurred slide background images.

- Added rules for PNG from PNG (via renaming). ...

- Added rule for zoomed (144dpi) PNG from SVG.
- Added workaround for Inkscape PNG export bug.

- Removed --export-text-to-path option, as it's no longer required (or ...

even desirable) with Inkscape 0.47.

- Removed obsolete OmniGraffle rules.

- Updated makefiles for new common infrastructure.

- Changed build rules for notes, as they are now a source file in their ...

own right.

- Fixed output location of exports from Inkscape (was current location, now ...

IMGDIR).

- Added combined infrastructure variables to prerequisities of combined target.

- Added cleaning for temporary PDFs.

- Split off various standardised rules.

- Added rules to handle PDF source images.

- Extended targets of various rules. ...

- Added pdfcrop to SVG processing chain (experimental).

- Added support for web server install target.

- Added new makefile infrastructure for general documents. ...

- Created include files for various "standard" items (paths, rules, etc.).
  These will ultimately be used by all the other make include files in
  order to promote standardisation and consistency.
- Removed obsolete Perl script for handling document includes.

- Changed over to XML Include using xmllint.

- Added support for SAXON-B.

- Changed "Sections" to "sections" to match the folder names in CVS.

- Added fix for mysterious extra / under Windows.

- Added default vpath for .pict.

- Added .svg to list of standard suffixes.