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What I mean to ask is whether one can configure the number of characters one moves right or left using PageRight and Pageleft?

I figured out a way to code up a Macro, but I wondered whether it's a setting one can control.

Macro is:
Search, Go To ... (CTRL-G for me)
Column
+nn (where nn is the number of bytes right one wishes to "page")
Go To

Yes, it does work in reverse. You can specific -nn to "page" nn number of bytes to the left.