Mission Editor: External

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Mission Editor provides majority of tools required for designing a mission, but finishing touches are usually made outside of it. Briefings, custom scripts, multiplayer settings or final packing are only handled by separate files programs.

Mission Folder

Folder Name

Mission folder with the most common files

Missions are stored as folders with name composed of mission name set in Save window and world name:

<mission name>.<world Name>



World name matches the class in CfgWorlds

Folder Directory

You can find all missions in your Profile directory.

Single player missions are located in Missions folder, multiplayer missions can be found in MPMissions folder in same directory.


Within the mission folder, you can create as many subfolders as desired. As paths in mission are relative, you can refer to such subfolder using:




Example of mission.sqm

The mission.sqm file is generated automatically by the Mission Editor. Any action you perform in Mission, Intro, OutroWin or OutroLoose is saved in this file.

Once you have completed your new mission, it's always good practice to check the mission.sqm for presence of unwanted addons in addOns and addOnsAuto arrays. They contain CfgPatches classes of used addons.

class Mission

Apart from class Mission, list of addons is present also in class Intro, class OutroWin and class OutroLoose.


Example of Description.ext

Main article: Description.ext


Example of *.sqf file

Main article: Script (File)

External script files are executed by filename, so they can have any filename the author chooses. There are however several special Event Scripts that are automatically executed by the game engine at certain times during the mission.


Example of *.fsm file

Main article: FSM


Main article: Briefing.html

File loaded automatically when the mission begins, providing mission plan and notes.

The briefing is broken into 4 main sections:

  • Notes
  • Plan
  • Objectives
  • Endings

To preview your briefing whilst in the editor, hold SHIFT while clicking 'Preview'.

Since ArmA 2, briefing.html is only used for the debriefing text. For more information see Arma 2 Briefing creation.


Example of overview.html

Main article: Overview.html

The overview.html contains simple mission description and picture visible in main menu mission selection.