daps:convert:html

The given command can be broken down as follows:

• daps is a command-line tool used to generate documentation from XML-based sources.

• -d is a flag or option of the daps command, which stands for "dry run." This option is used to simulate the execution of the command without actually performing any actions.

• ${filename-xml} is a placeholder for the input filename. It suggests that the actual filename should be substituted in place of ${filename-xml}. The specified filename should be an XML file.

• html is a target format specified after the input filename. It indicates that the output should be generated in HTML format.

• --single is an additional option indicating that the output should be generated as a single HTML file, instead of multiple files or a documentation set.

So, the overall meaning of the command is to simulate the generation of HTML documentation from an XML source file called ${filename-xml}, with the output being a single HTML file.