The new BL51 option to disable specific warning messages is very nice! I would also like to have this capability in the C51 compiler (finer-grained control than WARNINGLEVEL). Specifically, there are times when I want to disable warning C280 (unreferenced local variable) when I know that I will not reference a parameter to the subroutine, and then re-enable that warning for subsequent functions in that module. For example: #pragma DISABLEWARNING(280) void funct1( char p1, char p2 ) { // this function does not need p1 do something with p2, ignore p1 } #pragma ENABLEWARNING(280) void funct2( char p1, char p2 ) { //this function SHOULD use both params // so I want the warning if I mess up }