Section 8: Program Editing134
When you inserted an instruction in the program, all instructions after the one inserted are moved down. Note that if you begin adding instructions and the display shows TRY AGAIN , you should attempt to insert the instruction again. If the display shows TRY AGAIN , you will need to stop and execute the SIZE function presented in section 7, to change the number of data storage registers. Decreasing the number of data storage registers will automatically increase the size of program memory. For further explanation, refer to section 7.
Going to a Line Number
It is easy to see that if you wanted to single-step from line 000 to some remote line number in program memory, it would take a great deal of time and a number of presses of the SST key. So using the GTO · nnn function, you can set the calculator to any line in the program. ( g GTO · nnn cannot be recorded as a line in a program.)
Whether the calculator is set to PRGM mode or normal mode, when you press GTO · nnn, the calculator immediately jumps to the program memory line number specified by the three-digit number nnn. Remember GTO · nnn always goes to the line number of the current program. If the calculator is not already within the boundary of the desired program, you can easily set it to that program by pressing GTO · and specifying the program name (e.g., g GTO · ALPHA AREA ALPHA ).
Let’s use GTO · nnn to set the calculator to line 015. We will insert a PSE instruction after that line to review the contents of the X-register (which is, at that time, the area of the cylinder without the top and bottom).
Keystrokes Display    
g GTO · 015 
  05 *    
  08 XEQ _ _    
  08 PSE    
  The PSE instruction.
When you added the PSE instruction, the program was altered ...