diff --git a/gisscripts/00README.txt b/gisscripts/00README.txt
new file mode 100644
index 00000000..98767cdf
--- /dev/null
+++ b/gisscripts/00README.txt
@@ -0,0 +1,9 @@
+All "grass*" scripts are to be run as $GRASS_BATCH_JOB on the
+respective mapset in order to prepare and clean polygon datasets for
+the use with TerraGear's "construct" tool.  In the long term, the
+preprocessing in GRASS is destined to replace the respective
+functionality in "construct".
+
+The "IntersectsRemoval.sh" utility takes a single Shapefile containing
+one single closed POLYGON (MULTIPOLYGON's _should_ work but might crash
+in PostGIS) to cut a hole into the Custom Scenery basemap.