I searched online for how to set the scrollback buffer size for lxTerminal, but the man page is mysteriously quite simple, missing any useful information. Is there a way to configure lxterminal to use a large scrollback buffer?
It's configurable via the preferences dialog

in the Display tab (where you can scroll the number up, or just fill in a large number which will be limited to 100000):

Regarding documentation - it uses VTE (same comment applies).
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