(Table from German LETTER.HLP)

   Short survey on keys during font editing ("Bearbeitung"):

ESC    exit editing             F1     Help
ENTER/Space   set dot           Alt-F1 previous help
Move cursor key to set/unset points (continuously in auto mode)
TAB Cursor   move picture       TAB n Cursor   move picture n dots
INSERT Cursor   go to direction DELETE Cursor   delete to direction
F2  save font (=alphabet)       Alt-F2    put char from left to right window
F3  load font 2 (=ABC2)         Alt-F3    get char from right to left window
Ct-F3    mix right on left char F8        delete left char
F4   goto char (left window)    Alt-F4    goto char (right window)
Ct-F4   single step on/off      F6   auto mode on/off
F5   swap left/right char       Alt-F5   switch right (ABC2 / alternate char)
Alt-F6   help lines on/off
F7   survey on font dot widths  Alt-F7   survey on font 2 dot widths
F9   load+print left char       Alt-F9   load+print right char

Single step denotes step width when paging via PgUp/PgDn. Single step on
will visit every character, single step off only defined characters.
Right window may display alternate character ("Res" = "Reserve") or
alternate font ("ABC2"). You can put to, get and mix characters from right
to left window.

"TAB Cursor" means: press tab key, then one of the four cursor keys. This
key denotes direction.

Set dots with ENTER. Moving around with cursor keys will erase dots.
In auto mode, moving around with cursor keys sets dots.
Horicontally adjacent dots must not be set, always set dots as "x x x", not
as "xxx" (printer feature).
Always keep printer available if you want to print.

"Super Druck" will print banners of many meters.

Be sure to save (F2) changed fonts. LETTER won't warn you before leaving!!!

If you really need that program, let me know. We could do one of the
following:

- translate LETTER.HLP to English language (not so bad suggestion)
- translate LETTER source files to Turbo Pascal 6.0's Turbo Vision to
  enable mouse, SAA surface and the like (even better but more work)
- of course, some people might do it (far) better themselves. The format of
  LET-files is very simple, so - why not?
  (Format, if I remember right: two bytes length of file, i.e. offset of
  byte past last data byte in file. Then for every defined character: one
  byte the ascii code of the character, second byte the number of columns,
  then the data = (three times the number of columns) bytes, in order
  upmost 8 bits - middle 8 bits - lowest 8 bits, each column.


