HP -28S Manual page 28

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ATTN
7. Annunciators
8. Command line
9. Shift key
10. Enter command line
11. Delimiter for symbolic objects
12. Power on and off; clear com-
mand line; stop program
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13
13. Number entry
14. Arithmetic
15. Backspace
16. Menu selection, next menu row
1 7. Menu keys
18. Menu labels
19. Stack levels
1: Getting Started 27