Problem when programming in HP 35s and other calculators

[math7]

Hello, I think the HP 35s is a good calculator, programmable with good 30KB memory, elegant and easy to use. But I'm doing some programs and I found the programs that can be called with a label, and that you can only use labels from A to Z and only one character for what I understood in the manual. So, how can you do it if you have more than 30 programs stored in the HP 35 for different things, if you can only use 26 labels, one for each program? I think this is a major limitation in the programming of this calculator and similar HP ones! Although you have enough memory, you can limit yourself to only 26 programs or less, and you can not repeat the label because you have a duplication error, and if you can use a program with several subroutines each one has to carry your label too, then how to program more? Should other programs be deleted then?
Is there a trick to be able to program beyond 26 programs?