The original ConfigTool (which ran only on Windows) had a feature called the
Memory Layout Tool which helped describe the memory regions, etc, for a given
platform.  With the change to the new ConfigTool (now written using WxWindows
and running on Linux as well as Windows), support for the MLT has not yet been
implemented.

Sorry, but there is no schedule for when this will be added, so in the meantime
there are two arrproaches for creating & maintaining MLT files:
  * Find a copy of the old ConfigTool [hard, cumbersome]
  * Hand edit your config files.  While this is tedious, it's not difficult.
    Start by copying known working files and edit them, trying to keep things
    synchronized (i.e. the .h and .ldi files reflect what's in the .mlt file)

Volunteers to restore this functionality will be gladly received!