Defining the System

If you have an existing database with information about your system, then you can write the system definition part of your setup file in two different ways.

• If you have an unencrypted user database, then you can define your system by entering DATA module commands directly in the setup file. Use the DATA commands that you normally use to define a system when doing equilibrium calculations in Thermo‑Calc Console Mode.
• Define your system by entering DATA module commands directly in the console, then generate a macro file with the GIBBS command LIST_DATA <name of setup file>.tcm p . This command saves all the data that has been loaded in the GIBBS workspace as a macro file. This file can then be modified as required into an optimization setup file.

Creating Additional Composition Sets of a Phase

If you need several composition sets of a phase, then these should be created with the GIBBS command AMEND_PHASE_DESCRIPTION <phase name> composition_sets <composition set number> in the setup file.

If you add composition sets of a phase after the POP file has been compiled, the data structure in the workspace is corrupted and you have to recompile the POP file.