MarkUp is a project of GMking.org, a network dedicated to support game developers of all IDEs. For more information on GMking.org and all of the other services it provides, visit our main site!
GMpedia.org
GMPedia.org is a Game development wiki by GMking.org. GMPedia is a sister project of MarkUp Magazine that provides its readers with articles and information about various game development-related topics. It is a great source for information related to Game Maker and other programming languages and IDEs.