Original User: stevelynch
Jamal
Because the environment shows up does not mean that it is supported. Random numbers in the environment, for example, are not supported when you do CopyFeatures.
The tool's help lists which environments are supported.
Also, MASK is supported by nearly all the tools in the Spatial Analyst toolbox, all the Geostatistical Anlyst tools that output raster (but only from 10.1 onwards). The tools in the Conversion toolbox and the Raster tools in the DataManagement toolbox, for example, also do not support mask.
I hope this helps you better understand which tools support mask.
Steve