Modifiers is a mechanism to redefine the input quantity/ies to
functions. It is specified through the menu command
. The modifier specification dialogue asks for the following:
For the two first selections a corresponding plant component or basis component must be chosen.
The the three first a specific quantity is chosen.
The last type (periodic) is simply making the corresponding function periodic.
The first three types require an initial value, while the last asks for the period.
You may generate a number of modifiers in one dialogue session.
It is also possible to go back and forth between the modifiers to change their settings.