Information: more - coping with long texts by skimming

Description:
	Sometimes texts are too long to be shown in one go, e.g. notes on
	bulletin boards or pages in books. Then you get the first lines
	of the text and you are prompted something like "More (line 23):".
	Now you are in the "more" mode - don't panic! ;-)

	You have following commands in "more" mode:
	'help', 'h', '?': shows a few help lines,
	'q'             : quits "more" - leaving to normal command mode,
	'!<command>'    : escapes to the normal command mode - see below,
	'u'             : shows previous page - going up,
	'', 'd'         : shows next page - press <ENTER> (or 'd<ENTER>',
	<number>        : shows page starting with line <number>,
	<anything else> : shows the current page again.

	'!' is interpreted as an escape to the normal command mode that
	is to say you leave the "more" mode just for this one command
	(e.g. 'look', entering '!look') and your next input will be in
	"more" mode again.

Note:
	A possibility to change the amount of lines shown in one go is
	planned - something like 'set lines 40'.

	The word "more" derives from the command 'more' on Unix-like
	systems for skimming/paging files.

See also: helpdir/set, w/more