File created by form•Z, a 3D solids and surfaces modeling program; saves a backup of a form•Z project (.FMZ file) and may be one of several autosave files created while the project is opened and being edited; can be used to restore the state of a project file if the software crashes or if the user forgets to save the project.
Form•Z autosave files can be set to save after every N number of operations performed in the software.