Vmake version 3.1 has the following enhancements:

The console window can now follow the Vmake window to public screens.  

When Vmake jumps to a public screen, the console window is closed.  The next 
time Vmake writes to the console, it will reappear on the new screen.  
Information from the previous console window is lost.

In order to bring about this behavior, the vmake.config file has been altered
to use a new parameter substitution string, %n, which expands to the name of
the public screen on which the VMake window appears.  CONFIG string 1 becomes:

  CONFIG "1"  "CON:0/0/640/100/VMake Console/AUTO/screen %n"

VMake now sets the REXX return code in interactive mode (REXXI ON).

If Vmake presents a requester with no options, indicating that a command has 
failed, the error code will be set to the index of the TEXT string in the 
requester.  If the requester presents choices, the error code will be set as
above if the user selects the 'CANCEL' option.  If the user select 'OK' or
the middle button, both of which allow the command to continue, then the REXX
return code will be set to 0 to indiate success.  In addition, if the VMake
command puts up a file requester and the user cancels rather than selecting a
file, the return code will be set to a non zero value.

The SET command has been tidied up.  

If no symbol name is given in the command, VMake now puts up a requester.  
Also, VMake now deals correctly with symbols whose name starts with an 
underscore (eg _systemsymbol).  Any symbol whose name starts with an 
underscore is not saved with the project file, and  its value is preserved 
when changing between projects.  With version 3.1, Vmake no longer issues 
the requester "File has been changed, save?"  as a result of updating such a 
system symbol.  The requester does appear if a symbol that will be saved with 
the project has been set or altered.