Hi! The biggest new feature of Artemis in today's release is the new page for setting the Guess, Def, and Set parameters. Here is a screenshot: http://leonardo.phys.washington.edu/~ravel/software/exafs/images/artemis/art... The document has been updated to describe the new format of the GDS page. http://leonardo.phys.washington.edu/~ravel/software/exafs/doc/artemis.pdf See section 5.7.9. As you can see, the parameters are now displayed in a list structure rather than as a stack of entry boxes. This allows many more parameters to be displayed at one time in the same space. The new layout also allocates more horizontal space to the display of the math expressions. The different kinds of parameters are displayed according to their type. The color of the text and the content of the second column indicate the parameter type. Guess parameters are in purple text and have the "g:" tag in the second column. Set parameters are in black text and have the "s:" tag. Defs are green and have "d:". Skip parameters are grey and have no tag. Not shown in the screenshot are restrains, which are pink and have the "r:" tag in the second column. To edit a parameter, click on its entry in the list. This highlights that parameter in grey, as shown for the "fee0" parameter in the screenshot. The name, type, and math expression for that parameter are entered in the space at the bottom of the page and are ready to be edited. Click the "New" button to create a brand new parameter. The neatest new feaure is what I call parameter annotation. An annotation is a short text string which says something useful about the parameter. An example of this is seen in the screen shot. The selected parameter was annotated after the fit with its best fit value and error bar. Whenever you click on a parameter, its annotation is shown in the echo area. If you double-click on a parameter, you will be prompted to supply an annotation for that parameter. This provides a nice way of documenting the role each parameter plays in the fit. There are lots of other neat features of the new GDS page. For instance, Artemis does not allow you to define a parameter more than once. And there is a very useful context menu that gets posted when you right-click on a parameter. It may take a bit of getting used to, but I suspect that you will enjoy the new GDS page. I find it to be both more powerful and easier to use than the previous format. Enjoy, B P.S. Thanks go to Scott, who I hope does not mind that I used his project file for the screenshot. -- Bruce Ravel ----------------------------------- ravel@phys.washington.edu Code 6134, Building 3, Room 405 Naval Research Laboratory phone: (1) 202 767 2268 Washington DC 20375, USA fax: (1) 202 767 4642 NRL Synchrotron Radiation Consortium (NRL-SRC) Beamlines X11a, X11b, X23b National Synchrotron Light Source Brookhaven National Laboratory, Upton, NY 11973 My homepage: http://feff.phys.washington.edu/~ravel EXAFS software: http://feff.phys.washington.edu/~ravel/software/exafs/