How to program a distant steering code ?

LD 87

REQ new
CUST 0
FEAT cdp
TYPE dsc
DSC
FLEN 4
DSP lsc
RRPA
RLI 2

Additionally, what is important:

RLB (for RLI) - LD 86

RLB - RLI
...... - RLI
...... - RLI - ENTR 0 --> Route x
.................ENTR 1 - Route A
.................ENTR 2 - Route C

DGT (for DMI Digit Manipulation Index) - LD 86
DEL --> How MANY digits to delete
INS --> WHICH digits to insert

DSC --> DN --> RLI (RLI) - ENTR --> Route