*ver.dat - any file with a name which ends in ver.dat is a file of thermodynamic data formatted for perplex. the letters in the prefix give some indication of the authors, the numbers give the year of the most recent revision. If you find errors in these files I would be grateful if you tell me of them. *solut*.dat - solution model files as with the thermodynamic data files, they are provided primarily as an example or template that you can use to make your own models. These files should be placed in the working directory where the Perple_X programs are executed. UNIX/MAC users must convert these files from PC to UNIX/MAC format see the UNIX README file.