Define(stmtName)
Define forms a new statement out of common (basic and self-defined) statements,
which is then used with the specified operand name.
Calling the defined statements
executes the statement sequence starting with Define and ending with ;. Just
like variables, every module has a name space for
complex statements. The module GLOBAL is an exception. A statement
that is
defined here, can be called in any module, as long as there is no locally defined
statement with the same name.
Information: Recursive definitions are permitted (Example).