implemented the ^W command for refreshing the screen in loops, for sleeping and also the CTRL+L immediate editing command

* ^W can be added to loops in order to view progress in interactive mode.
  It also sleeps for a given number of milliseconds (10ms by default).
* In batch mode it is therefore the sleep command.
* Since CTRL+W is an immediate editing command, you will usually type it Caret+W.
  ASCII 23 however will also be accepted.
* While ^W only updates the screen, you can force a complete redraw by pressing CTRL+L.
  This is what most terminal applications use for redrawing.
  It will make it harder to insert ASCII 12, but this is seldom necessary since it
  is a form feed.
  ^L (ASCII 12 and the upcaret variant ) is still a whitespace character and therefore treated as a NOP.
* DEC TECO had CTRL+W as the refresh immediate editing command.
  Video TECO uses <ET> as a regular command for refreshign in loops.
  I'd rather keep ET reserved as a potential terminal configuration command
  as in DEC TECO, though.

1 files changed, 10 insertions, 0 deletions

diff --git a/doc/sciteco.7.template b/doc/sciteco.7.template
index 965e203..3bf8d2e 100644
--- a/doc/sciteco.7.template
+++ b/doc/sciteco.7.template
@@ -680,6 +680,16 @@ work as an immediate editing command in the GUI or as a signal
 dispatched from an associated console or from another process.
 T}
 T{
+.SCITECO_TOPIC ^L redraw
+Redraw
+T};12;^L;T{
+Everywhere
+T};T{
+Enforces a complete redraw of the entire window.
+This is useful when the display becomes corrupted,
+especially when using the Curses UI.
+T}
+T{
 .SCITECO_TOPIC interrupt
 Interrupt
 T};3;^C;T{