0.9b (c) 1995 Peter Childs
Function: SysGetKey
Syntax: key = SysGetKey([opt])
key The key which was pressed.
opt Any one of the following:
'ECHO' Echo the typed character (Default)
'NOECHO' Do not echo the typed character
Purpose: Gets the next key from the keyboard buffer, or waits for one if none exist. Works like the C function getch(). Unlike the regular REXX CHARIN() built-in function, SysGetKey() does not require the character to be followed by the Enter key.
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