# GRASS Help System

## THE DEFAULT WINDOW

If the user does not explicitly modify his current region settings, GRASS will use the default settings established when the user's current location was first set up; these are stored in the DEFAULT_WIND file under the PERMANENT mapset and copied to the file "WIND" in the user's own mapset. The geographic boundaries described in a location's "DEFAULT_WIND" file should therefore be large enough to encompass all of the map data contained in any of the mapsets under the same location. Its data resolution should also be sufficiently fine for data extraction purposes. Note also that all mapsets under the same location should use the same map coordinate system and projection.

The user can alter these settings using the g.region program, or by simply editing the "WIND" file using a text editor like "vi". The user may wish to use different settings for different purposes, and frequently alter the current region settings. These "tailored" settings can be stored under the "windows" directory, located under the user's current mapset, for possible later use.

In previous GRASS releases, the "geographic region" was referred to as the "geographic window"; the latter term is now obsolete.

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Automatically created on: Thu Oct 14 02:12:26 2004