A computer file explaining how to use the associated software.(noun)
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Use "helpfile" in a sentence
"All the commands used in this script are in the helpfile, which is also duplicated here"
"CamStudio can be learned in a matter of minutes and comes with a comprehensive built-in helpfile, so if you do manage to get stuck, you can simply hit "Help" and get the answers you need."
"· Detailed helpfile and large community-based support forums"