You must follow the following rules during panel layout:
Panels intended as prefixes, suffixes, and help panels only can contain text fields that are protected (P) or protected skip (S) and do not have field names.
You can enter (set) values for input fields (default values) in the layout.
The symbols that define the fields and the functions must be unique.
A field must fit, in its entirety, on a single panel line.
