The Stop List is a list of widgets which may not appear on the Widget Palette.
The Stop List is configured either through setting the XDesigner.stopList resource, or through the xdconfig utility.
The XDesigner.stopList resource consists of a comma separated list of widget class names (by default empty so all widgets appear on the Palette).
Any widgets which are mentioned in the Stop List, and which are referenced from designs loaded into X-Designer will correctly appear within the Design Area, but may not be selected.
The XDesigner.stopList resource can be changed between invocations of the tool; however if the Stop List was constructed using xdconfig, you must rebuild X-Designer using xdconfig to remove widgets from the Stop List and hence replace them back onto the Widget Palette.
Note that in Motif 2.1, the Stop list contains both the GrabShell and the PrintShell by default. This is because the PrintShell is not available on all platform releases of the toolkit, and because the GrabShell is a rather specialized widget which is not of use to the general applications programmer.
See also: