Ever wonder why most if not all your lecture notes have the same layout? Most likely, they were made using LateX. LateX, pronounced `lay-tech’, is a markup language in which documents can be written before being automatically typeset by a TeX program. It offers programmable desktop publishing, instead of visual (WYSIWYG) desktop publishing offered by programs like Adobe InDesign or Microsoft Word. The reason for using LateX is to focus on content, not on the layout. This does mean giving up a certain amount of control over presentation, or spending disproportionate amounts of time if you wish to enforce certain things in the layout. LateX is also a means to write and possibly share equations. Visual equation editors like MathType use LateX, and all equations in Wikipedia are interpreted from LateX code.