These functions are the core of the scripting system. They perform elementary computations, much like built-in operators. Some of them have a special syntax.
Most of these functions have little or no knowledge of the Planets game, for commands to interact with your game, see Functions, Contexts, and other sections.
An elementary function is recognized whenever its name appears followed by a "(" in an expression, even if that name has been defined with a different meaning. Z(0) will always refer to the Z() function, even if there is a local variable Z.
