HP 35s HP 35s scientific calculator - User Guide - Page 204

Press   to move the program pointer to Press   label nnn to move to a specific line. If Program-entry mode is not active (if no program lines are displayed), you can also move the program pointer by pressing  label line number. Canceling Program-entry mode does not change the position of the program pointer. Memory Usage If during program entry you encounter the message then there is not enough room in program memory for the line you just tried to enter. You can make more room available by clearing programs or other data. See "Clearing One or More Programs" below, or "Managing Calculator Memory" in appendix B. The Catalog of Programs (MEM) The catalog of programs is a list of all program labels with the number of bytes of memory used by each label and the lines associated with it. Press  (2) to display the catalog, and press Ø or × to move within the list. You can use this catalog to: Review the labels in program memory and the memory cost of each labeled program or routine. Execute a labeled program. (Press  or  while the label is displayed.) Display a labeled program. (Press   while the label is displayed.) Delete specific programs. (Press  while the label is displayed.) See the checksum associated with a given program segment. (Press  .) The catalog shows you how many bytes of memory each labeled program segment uses. The programs are identified by program label: 13-22 Simple Programming