Major differences with earlier versions

1. uplib
   Contains routines and datastructures for reading UNIPEN files and storing the related ascii keyword entries. Compared to the previous releases, more functionality is added and some routines are excluded or have their syntax changed.
2. upsiglib
   Contains routines and datastructures for transforming pen streams into a time-equidistant signal. Major difference is that now all unknown delineations are transformed into so-called bounded delineations. For example a word 'something':

   .SEGMENT WORD ? ? "something"

   is internally stored like e.g.

   .SEGMENT WORD 0:0-10:18 OK "something"

3. uphierarchy
   Contains routines and datastructures for maintaining a UNIPEN hierarchy, like PAGE PARAGRAPH LINE WORD CHARACTER.
4. up_segment_io
   A layer for retrieving UNIPEN .SEGMENT entries, e.g. on a certain level or containing a certain sub-string. This layer is new and is used by upread, uni2animgif and unipen2eps. In particular, command line arguments are treated in a uniform manner, so:

   upread file.dat -l WORD -s '*an*' -o file2.dat
   uni2animgif file.dat -l WORD -s '*an*' -o file.gif
   unipen2eps file.dat -l WORD -s '*an*' -o file.eps
   

   Will all result in a file with words from 'file.dat' containing the sub-string 'an'.