.FTN File Extension

Source code file written in Fortran, a programming language often used for numerical computation; uses the ".ftn" extension, which is shorthand for Fortran; saved in a plain text format and may be edited with any text editor, but must first be compiled by a Fortran compiler before being run as a program.

Fortran source code files also use extensions such as .F, .F90, and .FOR.

Flowchart created by Flowton, a free diagramming application; may include shapes, connections, text labels, and other components; can be used for software design, infrastructure diagramming, business process modeling, or other purposes.

FTN files are saved in an XML format.