<description>Long press the settings button, check the option &quot;custom file handling&quot; to enable the functionality.
The custom file handling configuration file is &quot;default.filecap&quot;, each line of it has the format as follows:
[file extension]:[mimetype]:[command line]
The &quot;[file extension]&quot; part can have at most two-segment of extensions such as &quot;txt.xz&quot;,&quot;html.gz&quot;.
&quot;[mimetype]&quot; indicates the type of &quot;[command line]&quot; output.
&quot;[command line]&quot; is same as the one in default.cmds. The most often used replacements are:</description>