About the File Types and Formats
The file formats (and the file extensions / suffixes) are based on whether you are working in Graphical or Console Mode, and in Console Mode, whether you are working with Thermo‑Calc and/or the Diffusion Module (DICTRA).
Graphical Mode
In Graphical Mode you work with one file type, a project file, which has a *.tcu file extension. This is applicable to Thermo‑Calc and all the Add-on Modules and Property Model Libraries.
Console Mode
In Thermo‑Calc Console Mode there are file types—macro (including log files) and workspace—and extensions —*.TCM, *.POLY3, *.GES5, *.PAR, *.POP, and *.EXP.
A reminder that Linux and macOS are case sensitive; when applicable ensure you enter file extensions with capital letters.
Workspace files are not currently available with GES6.