Settings

The Settings window lets you configure how the editor works. It is divided into three parts; the Main and Autosave tabs last across editor sessions; the Map one currently does not.

Main

Map

The map tab lets you configure which overlays appear on the map (if it's enabled on the general tab). By default, everything is enabled except the grid, but you can turn layers off just like you can with Ctrl+Shift+M in Civ3, to get a less cluttered map (this shortcut doesn't work in the editor, however).

You can also change the settings for the zoom quality - this particularly affects speed and image quality while you are zoomed out. Generally, Quick and Balanced are relatively close to each other, while Quality is noticeably slower, but also noticeably better in certain areas such as city names and borders. While at 50% zoom, city names are not legible with Balanced, they still are legible, if small, at 40% zoom with Quality.

Autosave

The autosave tab lets you configure how many autosaves should be kept and how often an autosave should be made. By default, up to 10 autosaves are stored, and an autosave is made every 4 minutes. Autosaves can run from about 500 KB for a standard size map to a few megabytes with a large map.

Auto Archive

Auto archive is a feature introduced in version 0.89 that complements autosave. The way it works is that if it is enabled (the default in 0.89; this may change in future versions), then whenever you save the scenario, a backup of your old save is also made, with the date of the save in the name. For example, if you were working on SecretScenario.biq, and made a save, overwriting the old name, a backup with a name such as SecretScenario_Archive_2014_02_08 2359.biq would also be made. This way, if you notice something isn't working that used to, you can go back and figure out which changes caused it, provided you save somewhat often. Autosave still has its place (depending on how you work, autosaves may happen more frequently than manual saves), and can co-exist with auto archiving, but addresses the case where the problematic change is older than the oldest remaining autosave.