The program Sdtty uses the completing reader for call,
concept, and command entry.
When typing, press Space to complete the current word. Type TAB or ESC to complete as much as possible. Type C-u (that is, Control U) to clear a partially-typed line. Type C-v (that is, Control V) to clear just the last word.
Sdtty has a special command refresh display
that has no counterpart in Sd. It causes a complete clean transcript
of the current sequence to be displayed. This can be used if the screen got
messed up due to such things as unreliable terminal or modem behavior.
Sdtty tries to keep the screen up-to-date efficiently,
maintaining a clean transcript of the current sequence on the screen
at all times, by using whatever Operating System facilities it thinks are
appropriate. If, for any reason, this doesn't work properly for you,
you can place the no_cursor option in your initialization file, or the
-no_cursor command-line switch at program startup.
See section Option Control, and section Command-Line Options.
This will cause Sdtty to treat the computer's display as
if it were a dumb typewriter. When started in this way, the part of
the transcript that has changed with each command is simply redisplayed.
This will inevitably lead to a choppy appearance on the screen or
printing device. The refresh display command cleans that up.
You can totally disable all special input/output processing by placing
the no_console option in your initialization file, or using the
-no_console command-line switch at program startup.
This should even make it possible to use the program from a printing device,
or to redirect input or output to files.
To deal with different types of display hardware with various screen sizes,
the -lines n switch can be given at program startup, as in
sdtty -lines 36 a2. The default size is 25.
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