Version 2.10 of VMake adds a new CONFIG slot to the VMake.config file to 
enhance editting of project files, and modifies CONFIG slot 3 to change the 
way the ADD gadget works.

CONFIG "10" "ame %f hunt %_PORT_)"

Config slot 10 is a command which will be passed to execute(), in the same 
fashion as config slot 7.  This string will be executed whenever the edit
command is invoked and the item currently selected in the list is the
project file (eg myproject.dice)  

Config slot 7 is the command used by edit for all other files.  It is 
appropriate to RUN the editor in this case.  This allows REXX interchanges 
between the editor and VMake, eg for processing compile errors.

Config slot 10 should invoke the editor directly, so that control will not
be returned to VMake until the editor has saved the file.  If the editor is
invoked, then the READ command will be invoked to read the modified project
file after it has been editted.  This will not work correctly if you RUN the
editor.

If Config slot 10 is not present, VMake will use Config slot 7 to edit the 
project file like any other file, and will not invoke the READ command after
the edit command.  This is the way things worked before version 2.10

CONFIG slot 3 provides the default pattern match used when the ADD gadget in 
the file list is used.  It has been modified to:
  "(#?.C|#?.H|#?FILE#?)"

In addition to updating the documentation for this config slot, it might be 
good to add the following advice with config slots 2, 3 and 4, in the 
documentation for the affected commands: READ, NEW, SAVE, and RECFG; and in
the section "Creating a new file in a Project" which describes using the NEW 
gadget to add a file to a project.

CONFIG slot 2 is used when you use the READ, NEW or SAVE commands without a
definite argument as the default pattern for the file requester.  You can
override the option by typing "#?" in the FILE entry of the file requester,
or you can modify CONFIG slot 2 to meet your needs.

CONFIG slot 3 is used when you press the NEW gadget in VMake's file list
gadget as the default pattern match for the file requester.  You can override
or modify ... (as above)

CONFIG slot 4 (as modified by version 2.7. not as described in the original
docs) is used when you use the RECFG command to read a new configuration file.
(same blurb as for 2 & 3)