RENUMbers the file in memory. The commands are:
RENUM
Renumbers the entire file so that it starts at line 100 and increments in spaces of 10.
RENUM new-start
RENUMbers the entire file so that it starts at line new-start and increments in spaces of 10.
RENUM new-start, increment.
Is the same as RENUM new-start, except that the line increment will be in steps of "increment".
RENUM new-start,increment,old-start
Is the same as RENUM new-start,increment except that only those lines from old-start to the end of the file will be RENUMbered.
RENUM new-start,increment,old-start, finish
Is the same as RENUM new-start,increment,old start, except that the RENUMbering will terminate with the line "finish".