There are 2 file types use the .UPR file extension:
1. Fractal Parameters File
Data file used by fractal math and art programs such as Apophysis and Ultra Fractal; saved in a plain text format and contains the parameters used to generate a fractal image; often used for flame fractals; also used for sharing fractal sets with others.
Since the UPR format saves fractal parameters rather than a bitmap, it allows the fractal image to be rendered mathematically and zoomed without loss of quality. Programs that render UPR files generally can save any view within the fractal image as a raster graphic such as a .PNG, .JPG, or .BMP file.
NOTE: Apophysis is available in a source code format.
Updated: May 7, 2012
2. FileMaker User Dictionary
Data file used by FileMaker, a desktop database application; contains a user-defined word list that is used for spell checker exceptions when spell checking a database or form; differs from a .MPR file, which is a standard FileMaker language dictionary.
The default user directory is User.upr, which is located in the /Dictionaries/ directory of a FileMaker installation. You can access the word list in this dictionary by selecting in FileMaker.
Updated: October 2, 2010