* The values from the cursor and crosshair are shown whether the image is displayed somewhere or not. This makes a lot more sense than any other alternative: Of course it might be confusing if you that's not exactly a colormapped pixel of the image under the cursor, because it's not shown, but that's also true if there is another image on top or if you set the alpha value differently of change the composition mode. The user will just have to learn that.
* there is a tool called 'copy image properties' that takes the thresholds and colormaps from the current image and copies them to *all* other images.
* there is a 'Value window'-tool that opens a window and shows all crosshair and cursor-values of all images.
* gives a message if time sampling is > 1000
* given conditions are checked and wrong conditions are removed
* standard error plotted instead of standard deviation
* set the title of the image dialog and functional dialog to the filename
* 20 seconds as default in time average dialog
* 'float' to 'number' in warnings