Dynamcis AX Macros

I wanted to know how i could use string substitution to change the code in X++ using Macros. As a part of playing around with macros below are the findings. Macors in AX can be define in two ways

1. #define.TableRead(select * from EmplTable where EmplTable.EmplCode == %1;)
#TableRead("E0006")
info( emplTable.EmplCode );

2. #localmacro.TableRead
select * from EmplTable where EmplTable.EmplCode == "%1";
#endmacro

#macrolib.training
#TableRead(E0006)
info( emplTable.EmplCode );

The second way is the preferred way of creating multi line macros also if the macro includes some special symbols like ) or " then the send method is preferred

#macroLib is used when the macros are defined in a macro definations node instead of the local method scope.

Inheritance and Macros
The macros defined in the class declaration of the base class are available in the sub classes however if one of the class in the hierarcy undefines the macro then that point onwards the macro are not available in the child classes.