You can modify the structure of a logical RMSfile with toolkit as follows:
Start toolkit on your database:
c:\> toolkit dbname
Select 1 - Data Files Menu from the Toolkit Development Menu.
Select D2 - Modify File Definition from the Data File Menu.
Enter the logical name of the RMSfile to modify and press STORE <F5> to continue, or CANCEL <F1>-X to leave without modifying the RMSfile.
Enter your changes as described in section 4.6, Editing an RMS Definition File.
You can modify a logical RMSfile with the following command:
c:\> lfedit -v lfname
Lfname is the logical name for the RMSfile. Lfedit assumes that the database has toolkit style subdirectories; lfedit gets the RMS definition file from the def subdirectory.
Lfedit runs the filedef program to interactively modify the RMSfile definition, as described in section 4.6, Editing an RMS Definition File.