[ Thanks to dmbkiwi
for this link. ]
From Part iv:
“One problem I often find with switchers (both in beryl and in
other window managers) is that they either only give an icon (for
conventional switchers) or three thumbnails. While you can switch
through those three thumbnails, if you’ve got 10 or 15 windows
open, it becomes quite unweildy to flick through them, and quite
often you end up pressing the tab key so fast, you often flick past
the desired window, because you only see it once before it becomes
the selected window, you don’t have time to react. Beryl provides a
couple of solutions to this issue…”
Complete
Story (Part iv)
Complete
Story (Part v)