form specification file
An ASCII source file that describes the logical format of the screen form and
provides instructions about how to display data values in the form at run time.
You define a screen form in its source file (with a .PER extension) and create
a compiled version (with a .FRM extension) for use at run time. The Form
Compiler creates the compiled version. Sometimes this file is referred to as simply
form specification.
See also field, field tag, file, screen array, screen form.