[Edratman]

It is patently obvious that I've never used the site mask codes. I have only used #feature and #knownfeature.

You are going to have to walk me through this.

Air and water site codes (from previous post in this thread) are 16384 and 32768 respectively, for a total of 49152.

Using my example province, "#terrain 331 4194312", how would I put random air and water sites there? I see three possibilities:

1. Add the two values up - "#terrain 331 4194312" goes to #terrain 331 4243464 (4194312 + 49152)

2. Both are separate line entries -
#terrain 331 4194312
#terrain 331 49152

3. There is a separate code for masks and used as a separate entry:
i.e. (as a WAG) #terrainmask 331 49152

Personally, I am thinking choice #3.

However, either way, I now am sure that this old dog won't be learning this trick.

Thanks for your help Edi.