When adding a new layout items to the GUI, a number of changes must be made for these items to be stored and recalled by the Layout command. 

In layout_handles.m
   Create a handle for the new items

In set_layout
   Add lines to store layout items

In get_layout
   Add lines to recall the items

In parse_command
  Add protocol commands to control the items

In save_file
  Update the "layout" section to generate proper protocol commands

Delete all existing copies of koflay.dat and koflay_default.dat

In matoff.m
   Add new variable name and default value as environment.<variable name>.
   Add a new    set(findobj('tag',....  line to initialize the environment menu

In setenv.m
   Add entry for new variable.  Use all caps in the findstr() commands. 
   Add new variable to environment_menu.m

Documentation
  Update help_request.m
  Update environmental_variables.html
  Update command_reference.html#Setenv