IJ> Does Mystic auto generate a node number environment veritable like
 IJ> Synchronet (SBBSNODE) or Wildcat (WCNODEID) or do I just create my own
 IJ> on the fly in a batch file?

No it doesn't set any environment variables. I've never found any reason to need that.

When you are executing a door command you can use %N for the node number and %P for the path to the door drop files.  Mystic replaces those codes with the values I metioned when it executes the command.

If you execute a batch file like this on a menu:

Command: DX
   Data: c:\mystic\doors\mydoor.bat %N %P

Then in your mydoor.bat file the node number would be %1 and the path to the door drop files would be %2 (because the first thing sent to the batch file was the node number, and the second was the path to where the drop files like door.sys exist).

... Youth is glorious, but it isn't a career

--- Mystic BBS v1.12 A49 2023/01/28 (Windows/64)