Compact guide to less commands

Movement

Arrows, page up/down, home/end keys all work as expected. In addition the following are sometimes useful:

d/u	Move half page forward / backward
20g	Move to line 20
20%	Move to the 20% point
ma/'a	set markpoint "a" / move to markpoint "a" (also instead of "a" any other lowcase letter)

Search

/pattern	search pattern forward
?pattern	search pattern backward
n	next match
N	previous match
/!pattern	search non-matching line
Esc-u	turn match highlighting on/off

Misc

=	show info about the file and current position
! command	execute command and show its output
s filename	save to file (if the input was a pipe)