LaTeX isn't just for reports and papers - the powerful TikZ package can be used to create professional graphics and diagrams with only a few lines of text
Here's the perfect example from TeXample.net that's pre-loaded in writeLaTeX for you to try out - just click to open & edit online instantly.
For comments and discussions on this example, see the TeXample page.
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This is the Elsevier article class with dummy text included to give an example of how the template looks when filled out.
This example is provided by Vel, and was originally posted on LaTeXTemplates: http://www.latextemplates.com/template/elseviers-elsarticle-document-class
Template by Elsevier; dummy text added by Velimir Gayevskiy of www.latextemplates.com
This is a LaTeX template for preparing documents for IEEE Sponsored Conferences and Symposia. It was submitted by an author writing for the 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC’14). The various components of your paper [title, text, heads, etc.] are already defined on the style sheet, as illustrated by the portions given in this document.