Manual: Save Program
Allows user to save the current program in RAM into one of the ten available slots.
The save screen shows mode (Save), prompts for the slot to save into and the bottom line (Free) shows a list of slots that are empty. (So the example shown below all the slots are empty with the exception of 3 and 7 which have a program stored in them).
 …  The number keys  through to  change the number of the slot you wish to save to.
[G] Saves into slot shown in brackets.
[C] Cancels and returns to programming menu.
If RAM is empty then saving it will clear the slot.