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-This is grn from the Berkeley ditroff distribution. It has no
-AT&T code and is therefore freely distributable.
-
-Tim Theisen <tim@cs.wisc.edu>
-
-=====================================================================
-
-This is the modified code for the groff. It uses the different
-devxxx format that is ascii rather than binary as in the
-Berkeley distribution. Since groff does not have the \Ds option
-for line drawing (dotted, dashed, etc.), this version includes
-the routines for drawing curves and arcs, so it does not use the
-\D~, \Da nor \Dc. Although also included in here is a routine
-for drawing the optional gremlin style curves, it is not used
-because the gremlin editor uses the conventional spline
-algorithm. The Berkeley grn has the choice of different
-stipples. Here, only different shades of gray will be painted
-depending on the gremlin file. It is possible to upgrade this at
-a later time. (Daniel Senderowicz <daniel@synchrods.com> 12/28/99)
-
-=====================================================================
-
-It has been further modified by Werner Lemberg <wl@gnu.org> to fit
-better into the groff package.
-
- . Replaced Makefile with Makefile.sub.
-
- . Removed dev.h since it is unused.
-
- . Renamed grn.1 to grn.man; this man page has been extensively
- revised.
-
- . Used error() and fatal() from libgroff for all source files.
-
- . Renamed *.c to *.cc; updates as needed for C++ (prototypes, proper
- casts, standard header files etc). Heavy formatting.
-
- . main.cc:
-
- Using groff's default values instead of DEVDIR, DEFAULTDEV, PRINTER,
- TYPESETTER, and GREMLIB.
-
- `res' is now an integer.
-
- Added `-C' command flag (for compatibility mode) as with other
- preprocessors.
-
- Added `-F' and `-v' option (similar to troff).
-
- Renamed `-L' option to `-M' for consistence.
-
- Removed `-P' option.
-
- Using font::load_desc() for scanning DESC files.
-
- Removed SYSV-specific code.
-
- Using macro_path.open_file() for getting gremlin graphic files.
-
- Added usage().