Sometimes customer would like to have some report activated via operations menu item, in order to do that we have to duplicate all the window code instead of having one or a few line s of code like this:

PluginRowMenuItem("IVDClass:2" 0,"My Previous sales price",' ',' ',0,"MyIVLastSPrsm");
which would insert a new row menu item into IVDClass:2 window (Invoice window)