You can specify a set of behaviors for one particular file by setting
the variable fcm-behavior in its local variables section. This
variable's value must be of the form ‘(:key value ...)’
where the possible keys are :template, :load and
:save.
:load and :save must be booleans that determine FCM's
behavior at the corresponding time, and :template must be a
template file designator (see Template Designators).
As a safety precaution, every template file provided in the FCM distribution contains such a variable with a value of ‘(:template nil)’, effectively disqualifying the file for contents management altogether.