With the file extension FMOD presets of the flattening module of the vector graphics software Illustrator are marked. With the so-called process of transparency reduction, the layers (layers) and transparencies of a document are processed according to given rules into a single image. This process is mainly used for the graphical preview before printing or output in digital form.
Among other things, these preferences files store quality settings and information about which areas of the document should be flattened. In addition, you can specify, for example, whether text objects should be converted into contours.
The transparency reduction specification dialog can be reached via the 'Edit' menu. New specifications can be created, saved and loaded here.
Transparency reduction presets are also used by Adobe InDesign and Acrobat, with each program storing certain options in those files that are not supported by the other programs.
Also note that the newer versions of the Adobe Transparency Reduction prescription file programs no longer use suffixes.