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23th chunk of `runtime/doc/quickref.txt`
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|:bunload|	:bunload[!] [N]		unload buffer [N] from memory
|:bdelete|	:bdelete[!] [N]		unload buffer [N] and delete it from
					   the buffer list

		in current window  in new window       ~
|:buffer|	:[N]buffer [N]     :[N]sbuffer [N]     to arg/buf N
|:bnext|	:[N]bnext [N]      :[N]sbnext [N]      to Nth next arg/buf
|:bNext|	:[N]bNext [N]      :[N]sbNext [N]      to Nth previous arg/buf
|:bprevious|	:[N]bprevious [N]  :[N]sbprevious [N]  to Nth previous arg/buf
|:bfirst|	:bfirst	           :sbfirst            to first arg/buf
|:blast|	:blast	           :sblast             to last arg/buf
|:bmodified|	:[N]bmod [N]       :[N]sbmod [N]       to Nth modified buf

------------------------------------------------------------------------------
*Q_sy*		Syntax Highlighting

|:syn-on|	:syntax on		start using syntax highlighting
|:syn-off|	:syntax off		stop using syntax highlighting

|:syn-keyword|	:syntax keyword {group-name} {keyword} ..
					add a syntax keyword item
|:syn-match|	:syntax match {group-name} {pattern} ...
					add syntax match item
|:syn-region|	:syntax region {group-name} {pattern} ...
					add syntax region item
|:syn-sync|	:syntax sync [ccomment | lines {N} | ...]
					tell syntax how to sync
|:syntax|	:syntax [list]		list current syntax items
|:syn-clear|	:syntax clear		clear all syntax info

|:highlight|	:highlight clear	clear all highlight info
|:highlight|	:highlight {group-name} {key}={arg} ..
					set highlighting for {group-name}

|:filetype|	:filetype on		switch on file type detection, without
					syntax highlighting
|:filetype|	:filetype plugin indent on
					switch on file type detection, with
					automatic indenting and settings

------------------------------------------------------------------------------
*Q_gu*		GUI commands

|:menu|		:menu			list all menus
|:menu|		:menu {mpath}		list menus starting with {mpath}
|:menu|		:menu {mpath} {rhs}	add menu {mpath}, giving {rhs}
|:menu|		:menu {pri} {mpath} {rhs}
					idem, with priorities {pri}
|:menu|		:menu ToolBar.{name} {rhs}
					add toolbar item, giving {rhs}
|:tmenu|	:tmenu {mpath} {text}	add tooltip to menu {mpath}
|:unmenu|	:unmenu {mpath}		remove menu {mpath}

------------------------------------------------------------------------------
*Q_fo*		Folding

|'foldmethod'|	set foldmethod=manual	manual folding
		set foldmethod=indent	folding by indent
		set foldmethod=expr	folding by 'foldexpr'
		set foldmethod=syntax	folding by syntax regions
		set foldmethod=marker	folding by 'foldmarker'

|zf|		zf{motion}		operator: Define a fold manually
|:fold|		:{range}fold		define a fold for {range} lines
|zd|		zd			delete one fold under the cursor
|zD|		zD			delete all folds under the cursor

|zo|		zo			open one fold under the cursor
|zO|		zO			open all folds under the cursor
|zc|		zc			close one fold under the cursor
|zC|		zC			close all folds under the cursor

|zm|		zm			fold more: decrease 'foldlevel'
|zM|		zM			close all folds: make 'foldlevel' zero
|zr|		zr			reduce folding: increase 'foldlevel'
|zR|		zR			open all folds: make 'foldlevel' max.

|zn|		zn			fold none: reset 'foldenable'
|zN|		zN			fold normal set 'foldenable'
|zi|		zi			invert 'foldenable'

 vim:tw=78:ts=8:noet:ft=help:norl:
Title: Nvim: Syntax Highlighting, GUI Commands, and Folding
Summary
This section details syntax highlighting commands in Nvim, including turning it on or off, adding syntax keywords or match, syntax region and how to sync, listing current syntax items and clear all syntax info. Also covers GUI commands for menus and toolbars. Finally, it introduces folding commands, including setting fold methods, manually defining folds, deleting, opening, closing folds, and adjusting fold levels.