Dependencies
From GalaxyWiki
Dependencies are Mod files that your map loads when you start the map. They contain information which your map then uses, e.g. models, artwork, and data.
[edit] Default Dependencies
StarCraft II comes with several default dependencies which are normally used as starting points for maps. You add them via File -> Map Dependencies.
The campaign dependencies contain the most resources, as they contain all the unit information from the entire Wings of Liberty single-player campaign. The melee dependencies only contain the unit information from the online ladder melee. You can also add mod files from Battle.net 2.0, or from your computer, as dependencies.

