I recommend using the window class instead of the titlebar to find the window. That will work regardless of what's in the titlebar and it's easy to do in AHK:
Another benefit of using the window class is that you won't mistake listers for other Opus windows, like the Preferences or Customize windows (unless you explicitly want to treat them all the same).
[quote="abr"]You can do following, in -> settings -> preferences -> Opus start, you can choose the menu item
"open saved lister layout", which can be saved in -> settings -> lister layouts. If you name that
layout, for example "Opus", it will appear in your titlebars name, providing a name for you Autohotkey. Also note, that
Autohotkey also can refer to Opus´ window class, ahk_class dopus.lister.[/quote]
That would only help with windows that were opened via that layout. Open a window via any other method and it won't help at all.