If xml-document is not given, then the document to convert is read from standard input.
The XML source may contain characters that are not representable in the encoding that you select; in this case the program will bomb out during processing, and you should choose another encoding. (This is guaranteed not to happen with any Unicode encoding such as UTF-8, but unfortunately not everyone is able to process Unicode texts.)
If you are using GNU's version of iconv(1), you can affix //TRANSLIT to the end of the encoding name to attempt transliterations of any unconvertible characters in the output. Beware, however, that the really inconvertible characters will be turned into another of those damned question marks. (Aren't you sick of this?)
The suffix //TRANSLIT applied to a Unicode encoding --- in particular, utf-8//TRANSLIT --- means that the output files are to remain in Unicode, but markup-level character translations using utf8trans are still to be done. So in most cases, an English-language document, converted using --encoding=utf-8//TRANSLIT will actually end up as a US-ASCII document, but any untranslatable characters will remain as UTF-8 without any warning whatsoever. (Note: strictly speaking this is not "transliteration".) This method of conversion is a compromise over strict --encoding=us-ascii processing, which aborts if any untranslatable characters are encountered.
Note that man pages and Texinfo documents in non-ASCII encodings (including UTF-8) may not be portable to older (non-internationalized) systems, which is why the default value for this option is us-ascii.
To suppress any automatic character mapping or encoding conversion whatsoever, pass the option --encoding=utf-8.
This option is ignored if the output is to be written to standard output (triggered by the option --to-stdout).
If this option is used even when there are supposed to be multiple output documents, then everything is concatenated to standard output. But beware that most other programs will not accept this concatenated output.
This option is incompatible with --list-files, obviously.
Some man pages may be referenced under two or more names, instead of just one. For example, strcpy(3) and strncpy(3) often point to the same man page which describes the two functions together. Choose one of the following options to select how such man pages are to be generated:
This program uses certain other programs for its operation. If they are not in their default installed locations, then use the following options to set their location:
Up-to-date information about this program can be found at the docbook2X Web site <http://docbook2x.sourceforge.net/> .
The input to db2x_manxml is defined by the XML DTD present at dtd/Man-XML in the docbook2X distribution.