 --> [ local path prefix ]/param/duplicate_save_opcode_explicit.fpp:5:3
  |
5 |   async command C opcode 0x10
  |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^ duplicate opcode value (16 dec, 10 hex)
  |
 ::: [ local path prefix ]/param/duplicate_save_opcode_explicit.fpp:3:3
  |
3 |   param P1: U32 save opcode 0x10
  |   ------------------------------ previous occurrence is here

