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What is this additional "compatibility" line that I often see for CTMOUSE?

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First post, by Kahenraz

Posted on 
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Some AUTOEXEC.BAT:

...
LH CTMOUSE
REM For compatiblity purpose:
LH CTMOUSE > NUL
...

Notice that CTMOUSE gets called a second time with its output redirected to NUL. Any idea why?

Reply 1 of 1, by dr_st

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"Often"? Where did you see it often? I never saw it at all.

What I can guess is that on some computers CTMOUSE may fail to work unless loaded twice, and the redirection to >NUL is just to avoid it output to the screen twice.

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