Comment_chars MTA option
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File format and file handling options (comment_chars)
The comment_chars MTA option controls what characters are taken to signal a comment when they appear in the first column of various MTA input files. The value of this option takes the form of a list of ASCII character values in decimal. The default is the list {33, 59}, which specifies exclamation points and semicolons as comment introduction characters.
Note that the comment_chars option does not apply when reading the MTA option file itself as this file is read before comment_chars has even been seen. For this file, the following comment characters are "hard-coded": "!", ";", and "#".
See also: MTA options, Option value syntax, Getting option changes to take effect, MTA options, listed alphabetically, MTA options, listed by functional groups, File format and file handling options.

