+=                Add an immediate value or a variable to another variable

Syntax                        

VAR16S: source integer variable

VAR32D: destination long/fixed variable

VAR32D: source long/fixed variable

value16:  16-bit immediate integer value

value32:  32-bit immediate long value

Binary code

Execution        Destination variable = destination variable + immediate value or source variable

Example                

int Var1, Var2, Var3;

               long Var10, Var11, Var12;

               ...

Var1 +=  125;

Var3 += Var2;

Var10 += 128000;

Var12 += Var11;