More on the XML recommendation (cont'd)

Processing XML with Perl

Michel Rodriguez

Comments

XML comments can be included anywhere in a document

<!-- this is an XML comment -->

Processing instructions

Processing instructions are used to pass instructions to a specific processors (target). For example a document can be linked to a stylesheet using a PI.

<?t1 this is a processing instruction for the target t1 ?>

Entities

Entities are the XML equivalent of macros;

  <!-- defining entity foo -->
  <!ENTITY foo "bar">
  <!-- using entity foo -->
  <elt>text including the &foo; entity</elt>