man.charmap.enabled — Apply character map before final output?
If the value of the
parameter is non-zero, a "character map" is used to substitute certain
Unicode symbols and special characters with appropriate roff/groff
equivalents, just before writing each man-page file to the
filesystem. If instead the value of
man.charmap.enabled is zero, Unicode characters
are passed through "as is".
For converting certain Unicode symbols and special characters in UTF-8 or UTF-16 encoded XML source to appropriate groff/roff equivalents in man-page output, the DocBook XSL Stylesheets distribution includes a roff character map that is compliant with the XSLT character map format as detailed in the XSLT 2.0 specification. The map contains more than 800 character mappings and can be considered the standard roff character map for the distribution.
You can use the
parameter to specify a URI for the location for an alternate roff
character map to use in place of the standard roff character map
provided in the distribution.