HP-71B BASIC Question

[Sylvain Cote]

Thank you Valentin and Jean-François for your comments, greatly appreciated.
I am not the final consumer of this program, so I have the following hardware constraint: HP-71B, HP-IL and ~140KB of main memory, so no JPC for now .
For the development phase, I have purposely made the choice to only have one exit point per sub-routine and to have the code logic reversed in some parts to have more freedom for error handling in case I need it.
The final optimized code will include your suggestions when possible.
Best regards,
Sylvain