Added in 2.9
/scrolltext [-uNdNpNoNhelN] [window]
Scrolls the text lines in a window up or down.
-uN - Scrolls N lines up.
-dN - Scrolls N lines down.
-pN - Scrolls N pages up.
-oN - Scrolls N pages down.
-h - Scrolls to home.
-e - Scrolls to end.
-lN - Scrolls to the Nth line.
[window] - The window to scroll, if not defined, current active window is used.
; Scrolls the '#channel' window 5 lines up. /scrolltext -u5 #channel