DOCBOOK: Re: Environment Variables in File/Directory Names

Norman Walsh <> writes:

> Oh, I probably use envar for both. That distinction isn't often important.

Really?

> If it was, I'd just use a role attribute. Or maybe <literal
> role="envar">.  Or something.

For environment variables there is <envar> or <literal role="envar"> (if
you're sure your stylesheets will support the role attribute); for
values use <literal>.


Gregory Leblanc <> writes:

>> This leads me to another question: What markup is appropriate
>> for distinguishing between an environment variable and its value? (I'm
>> simply talking about the difference between TOMCAT_HOME and $TOMCAT_HOME).
>
> I normally use <varname>...

Really?  And when your publischer decides, all environment variables
should be prefixed with "$" or printed with italics you've lost; better
distinguish now:

    For <envar>DISPLAY</envar> use <literal>localhost:0.0</literal>.

<varname> is for such things like:

    <varname>i</variable> will increment from <literal>0</literal> to
    <literal>9</literal>.

And finally we have:

    Check files in
    <filename>/usr/lib/python<replacable>VERSION</replacable></filename>

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