Mitsubishi F-20-P-E Programmer

Hello, In front of me I have a Mitsubishi F1-30MR PLC and a Mitsubishi F-20P-E Programmer, I have no Manuals for these items and was wondering if anybody knows what keystrokes on the programmer are needed to delete the program that is on the PLC now. any info. would be helpfull.
Thanks.

This is from the manual:
Mode; STOP on base switch and PROGRAM on the programmer.
----|--Key------|-Indicator-
-1-|-CLEAR-----|-000
-2-|-STEP 0----|-000
-3-|-STEP 477--|-477 (for F-40: 889)
-4-|-DELETE ---|-000

Ref: Step 477 is the last step of F-20M. In case of F-40M unit instruct 'STEP 889' instead.