I have some doubts like Whether CSS should be put under Languages or not? Although Wikipedia says

Cascading Style Sheets (CSS) is a style sheet language ...

But do they write CSS under the languages section of the resume, along with PHP, etc? Similarly what about HTML? I have some doubt and I don't want to sound like someone who is not aware of the trends.

Just to give an example, currently I have the following languages,frameworks, technologies, etc. listed under the "Technical Expertise" section of my resume -

Technical Expertise

   * Languages  -
       Proficient -  PHP 5, Javascript, HTML ?*,CSS ?*,Sass ?*.
       Beginner - Linux Bash.

   * Databases - MySQL 5.
   * Technologies - AJAX.
   * Frameworks/Libraries - Symfony, jQuery.
   * CMSes - Wordpress.

Although my domain is Web-development/design, I welcome domain-agnostic answers which can provide some generic ideas/reasoning. I have seen, a lot of people messing up these sections (even more serious than my doubts :) ), putting things under wrong sub-headings and thus putting a big question mark on their understanding of those things.

I don't know much about XML, Comet Technology etc. Considering those are included too,

• What things should be put under Languages? E.g. Should CSS be put under Languages? Please give some reasoning to support your views.

• Where should the others (XML, Comet, cURL etc. ) be put? I welcome some examples of how you put it. Or do you have an additional Keywords section where you write all the unsortables ?

• Considering a set of standards like W3C standards, etc. do you have a standards sub-heading?

• I guess I have put the contents of other sections Okay. But do let me know about your ideas and reasoning.

After all, I understand there may not be a single answer to this, but let's see what is the trend.

Thanks

Updates
Further, do you mention design patters you have used? Web Services etc.? Where do you mention SOAP, XML etc...