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+This article contains a list of settings and atmospheres, similar to that of the [[category on the VDC|https://developer.valvesoftware.com/wiki/Category:Regions_%26_Atmospheres]]. It is supposed to talk about features and fixes Mapbase has introduced which change how a certain setting could be mapped.
+
+This is still a very heavy WIP, like most of the wiki.
+
+# Half-Life 2
+
+Mapbase is meant to be general enough to be portable to any type of game or mod, but it's built upon Half-Life 2 since it's the only publicly available game in the Source SDK and a very large portion of its improvements apply directly to HL2's features and entities.
+
+## Point Insertion
+
+* **`script_intro`** is used for the blending effects seen in the G-Man intro in `d1_trainstation_01`. Mapbase has changed the entity to show viewmodels correctly and allow the skybox to be drawn in either view.
+* **`ai_goal_actbusy`** is used to make citizens walk around, get food packages, and do special animations in the `d1_trainstation_02` plaza and the `d1_trainstation_03` apartments. Mapbase now allows map-specific actbusy scripts to be loaded (`maps/%mapname%_actbusy.txt`) and some miscellaneous improvements have been applied to the system as well.
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