HP42s first major program (Double Integral) Best way to approach?

[DM48]

In Werner's program below, is there anyway to make LBL "FX" into a local label? I keep trying to turn FX into 11 but this gives an error.

My goal is not to see FX in the list of programs, make BORE self contained if you will. I assume this has to do with the XEQ or PGMINT call?

(05-28-2020 07:28 AM)Werner Wrote:  Or you could use this, and use it interactively:

Code:

00 { 98-Byte Prgm }
01▸LBL "BORE"
02 MVAR "A"
03 MVAR "B"
04 MVAR "C"
05 1ᴇ-5
06 STO "ACC"
07 CLX
08 STO "LLIM"
09 PGMINT "FX"
10▸LBL 10
11 VARMENU "BORE"
12 STOP
13 RCL "C"
14 STO "ULIM"
15 INTEG "X"
16 4
17 ×
18 GTO 10
19▸LBL "FX"
20 RCL "B"
21 XEQ 01
22 RCL "A"
23 XEQ 01
24 -
25 RCL "C"
26 XEQ 01
27 ×
28 RTN
29▸LBL 01
30 X↑2
31 RCL "X"
32 X↑2
33 -
34 SQRT
35 END

Cheers, Werner