|  | Routines | 
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| 63388 | LD A,D | If DE is zero (i.e. no command summary text)... | ||||||
| 63389 | OR E | ... | ||||||
| 63390 | RET Z | ...then return | ||||||
| 63391 | PUSH DE | Store DE (command summary text pointer) | ||||||
| 63392 | CALL 63399 | Print or update command summary window at top of screen | ||||||
| 63395 | POP DE | Restore DE (command summary text pointer)... | ||||||
| 63396 | JP 63349 | ...and print in command summary window at top of screen and return | ||||||
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