Use the home screen and edit safely

Press these keys

Walkthrough

1. 1
   Return home

   Press 2nd → MODE (QUIT).

2. 2
   Recall

   Press ↑ to place an earlier entry on the edit line.

3. 3
   Edit

   Move with ←/→; DEL removes a character and 2nd → DEL (INS) inserts.

Worked example