This switch controls whether or not line numbering debug information is included in the object file, thus allowing the assembler source file to be viewed from within a source-level debugger.

┌────┬──────┬─────┬────┬──────────────────────────────────────────────────┐
│Type│Global│Group│File│Default                                           │
├────┼──────┼─────┼────┼──────────────────────────────────────────────────┤
│S   │Yes   │Yes  │Yes │-Odl (line numbering debug information is not     │
│    │      │     │    │included in object file)                          │
└────┴──────┴─────┴────┴──────────────────────────────────────────────────┘