Clears 'Count' lines from the output window, starting at the end (most recently-displayed).
This allows you to script the omission of recently-received lines (for example, in a multi-line trigger).
All line types are omitted (whether received from the MUD, command input, or Note lines). A line is counted as a physical line on the screen, it does not necessarily end in a newline character.
Warning - do NOT call DeleteLines from a trigger, alias or timer using send-to-script. For design reasons this will not work. In version 3.76 you will cause the client to crash if you do this. In version 3.77 upwards it will silently fail (ie. do nothing).
If you want to call DeleteLines from a trigger you must call a function in your script file (or plugin script), not directly nor indirectly from send-to-script.
This means that in your trigger you must not use send-to-script, but put the script function name in the "Script" box of the trigger, and put your function into the script file, eg.
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function myTrigger (name, line, wildcards)
DeleteLines (1)
end -- function myTrigger
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