You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information.
<?xml version="1.0"?>
    <allpages gapcontinue="Regular_(mathematics)" />
      <page pageid="56" ns="0" title="Regular">
          <rev contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">Main form: ''regular'', [[word type::adjective]]

Related forms: ''regularity'' (extent to which something is regular, or whether or not something is regular), ''regularize/regularise'' (to make regular)

Typical use:

* Something ordinary, and most likely to occur, as opposed to something special or rare. Similar words: [[similar::generic]], [[similar::typical]], [[similar::ordinary]]
* Something desirable, smooth, with good behavior.

Derived terms: [[derived::irregular]], [[derived::semiregular]]


{{:Regular (mathematics)}}</rev>
      <page pageid="82" ns="0" title="Regular (computer science)">
          <rev contentformat="text/x-wiki" contentmodel="wikitext" xml:space="preserve">===In formal language theory===

{{:Regular language}}

{{:Regular expression}}

===In coding theory===

{{:Regular code}}</rev>