xforms

    but arguments to directives are often case sensitive. Lines

    that begin with the hash character "#" are considered

    comments, and are ignored. Comments may <strong>not</strong> be

    included on a line after a configuration directive. Blank lines

    and white space occurring before a directive are ignored, so

    you may indent directives for clarity.</p>

    included on the same line as a configuration directive. 

    White space occurring before a directive is ignored, so

    you may indent directives for clarity. Blank lines are also ignored.</p>

    <p>The values of shell environment variables can be used in

    configuration file lines using the syntax <code>${ENVVAR}</code>.