xforms

<div class="section">

<h2><a name="usage" id="usage">Usage</a></h2>

<p>Macros are defined using <code class="directive">&lt;Macro&gt;</code> blocks, which contain the portion of

<p>Macros are defined using <code class="directive"><a href="#macro">&lt;Macro&gt;</a></code> blocks, which contain the portion of

your configuration that needs to be repeated, complete with variables

for those parts that will need to be substituted.</p>

<p>For example,  you might use a macro to define a <code class="directive">&lt;VirtualHost&gt;</code> block, in order to define

<p>For example, you might use a macro to define a <code class="directive"><a href="../mod/core.html#virtualhost">&lt;VirtualHost&gt;</a></code> block, in order to define

multiple similar virtual hosts:</p>

<pre class="prettyprint lang-config">&lt;Macro VHost $name $domain&gt;

UndefMacro VHost</pre>

<p>At server startup time, each of these <code class="directive">Use</code>

<p>At server startup time, each of these <code class="directive"><a href="#use">Use</a></code>

invocations would be expanded into a full virtualhost, as

described by the <code class="directive">Macro</code> definition.</p>

described by the <code class="directive"><a href="#macro">&lt;Macro&gt;</a></code>

definition.</p>

<p>The <code class="directive">UndefMacro</code> directive is used so that later

macros using the same variable names don't result in conflicting

definitions.</p>

<p>The <code class="directive"><a href="#undefmacro">UndefMacro</a></code> directive is

used so that later macros using the same variable names don't result in

conflicting definitions.</p>

<p>A more elaborate version of this example may be seen below in the

Examples section.</p>

<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>

<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_macro</td></tr>

</table>

    <p>The <code class="directive">Macro</code> directive controls the definition of

    a macro within the server runtime configuration files.

    <p>The <code class="directive">&lt;Macro&gt;</code> directive controls the

    definition of a macro within the server runtime configuration files.

    The first argument is the name of the macro.

    Other arguments are parameters to the macro. It is good practice to prefix

    parameter names with any of '<code>$%@</code>', and not macro names

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