Hello (Harry), ... >and the "modified data" will be dumped into the new file and should then be able to be >printed as a 'what you see is what you get'. Using a similar version (1.999 S), it is possible to save the changes so that they are not lost or have to be re-recalculated again if necessary. Before a batch is started, the Batch run-window shows "calctest.txt" as the file where datas are saved. But after starting the batch, the system has created a txt-file with the running batch file name, so I do not use the calctest.txt. For recalculations, I ever open first the "Results text filename" and I chose the "actual batch named " txt (e.g. RU001.txt), save this without changes as my original data file; then I rename it in one position (eg. -> RU001x.txt), save this and start the recalculation, and Save the recalculation in this ...x.file. By the way: does the "sample protection" mode is working in this 1.999z31 version? I did not get it started in the right way. Greetings, Deborah ******************** Deborah Rupprecht Institute of Plant Nutrition Karlrobert-Kreiten-Str. 13 53115 Bonn, Germany Phone (+049) 0228-73-3640, -1631 ********************