Bruce, just found my problem - if you select a single set and do a "save norm(E)", it does what I want. but when I select multiple sets, it just saves the data which are not flattened (see picture, I created the two data sets by (i) saving the actual set as norm(e) and (ii) saving the marked set as norm(e)). Usually, I save more than one data set per file - thats why I usually use the "save marked sets as" option. Sorry for the hazzle. And btw: I really like new versions of the horae package. Especially, the parameters section in Artemis improved a lot concerning handling. Keep going! Cheers, Norbert -- Dr. rer. nat. Norbert Weiher (weiher@chem.ethz.ch) Institute for Chemical and Bioengineering - ETH Hönggerberg HCI E 117 - 8093 Zürich - Phone: +41 1 63 3 48 32