How markup language differ from programming languages?

Answer:
While markup is only used to do markup (strangely enough), to mark elements as headings, text, images, anchors or whatever. Programming or scripting languages are used to do calculations or different task that basically can make stuff happen.
First answer by Expergefacio. Last edit by Expergefacio. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 2 [recommend question].