Chess Position Trainer let you import and export chess databases and chess games in the international PGN format. Hence you can create a chess repertoire with several openings in minutes just by using the import and afterwards fine-tuning it in Chess Position Trainer.
Of course you can export your chess repertoire in the international PGN format at any time. So your work is never stuck to Chess Position Trainer.
This opens a new dimension in conjunction with the Min-Max-Function. Export all end positions of your chess repertoire to analyse them with a specialized program. Afterwards import all position evaluations into your repertoire and finally use the Min-Max-Function.