fa/doc/md/MACROS.md

Fa macros

Fa macros are pieces of code that get substituted at compile time

You can define a macro like this:

macro <name>
    <code>
end

The indentation is optional but nice for human radability

To expand a macro just type this:

%<name>

Example:

macro exit 60 sys 4 pop end
1 %exit

This program exits with a supplied code