Contents5
Controlled Looping   
163
Problem   
168
Conditionals and Conditional Branches   
170
Problems   
173
Section 12: Subroutines   
177
Subroutine Types and Label Searching   
178
Details of Subroutine Usage   
183
Subroutine Limits   
187
Local Labels   
188
Problems   
192
Section 13: Indirect Operations   
197
Indirect Store and Recall   
198
Indirect ALPHA Store and Recall   
200
Indirect Function Control   
201
Indirect Control of Branches and Subroutines   
203
Problems   
204
Section 14: Flags   
209
Problems   
215
Flag Descriptions   
216
Problems   
233
Appendix A: 
Accessories   
237
Appendix B: 
Maintenance and Service   
239
Appendix C:  Stack Lift Conditions and Termination of
 
 
Appendix C: 
Keyboard Entry   
247
Appendix D:  Program Memory Storage Requirements and
 
 
Appendix D: 
LAST X Operations   
249
Appendix E: 
Messages and Errors   
255
Appendix F: 
HP-41C Extensions   
257
Appendix G: 
Advanced Programming and Operation   
259
Index   
262
Function Index   
267