ed5efdfc_Antenna__Decription
[Directive] #ifdef [identifier] [Decription] 
The identifier represents a variable of any type (boolean, string, or integer) and checks whether or not the variable is defined. If true (the variable is defined), the code that follows is processed. Nested blocks are processed as well. If false (the variable is not defined), the code that follows is commented and nested blocks are not evaluated. The directive must be closed with #endif.
Antenna
Decription