custom
			status line if the value of 'statusline' is adjusted
			properly. Whenever this buffer is modified by a
			quickfix command or function, the |b:changedtick|
			variable is incremented.  You can get the number of
			this buffer using the getqflist() and getloclist()
			functions by passing the "qfbufnr" item. For a
			location list, this buffer is wiped out when the
			location list is removed.

							*:lop* *:lopen*
:lop[en] [height]	Open a window to show the location list for the
			current window. Works only when the location list for
			the current window is present.  You can have more than
			one location window opened at a time.  Otherwise, it
			acts the same as ":copen".

							*:ccl* *:cclose*
:ccl[ose]		Close the quickfix window.

							*:lcl* *:lclose*
:lcl[ose]		Close the window showing the location list for the
			current window.

							*:cw* *:cwindow*
:cw[indow] [height]	Open the quickfix window when there are recognized
			errors.  If the window is already open and there are
			no recognized errors, close the window.

							*:lw* *:lwindow*
:lw[indow] [height]	Same as ":cwindow", except use the window showing the
			location list for the current window.

							*:cbo* *:cbottom*
:cbo[ttom]		Put the cursor in the last line of the quickfix window
			and scroll to make it visible.  This is useful for
			when errors are added by an asynchronous callback.
			Only call it once in a while if there are many
			updates to avoid a lot of redrawing.

							*:lbo* *:lbottom*
:lbo[ttom]		Same as ":cbottom", except use the window showing the
			location list for the current window.

Normally the quickfix window is at the bottom of the screen.  If there are
vertical splits, it's at the bottom of the rightmost column of windows.  To
make it always occupy the full width: >
	:botright cwindow
You can move the window around with |window-moving| commands.
For example, to move it to the top: CTRL-W K
The 'winfixheight' option will be set, which means that the window will mostly
keep its height, ignoring 'winheight' and 'equalalways'.  You can change the
height manually (e.g., by dragging the status line above it with the mouse).

In the quickfix window, each line is one error.  The line number is equal to
the error number.  The current entry is highlighted with the QuickFixLine
highlighting.  You can change it to your liking, e.g.: >
	:hi QuickFixLine ctermbg=Yellow guibg=Yellow

You can use ":.cc" to jump to the error under the cursor.
Hitting the <Enter> key or double-clicking the mouse on a line has the same
effect.  The file containing the error is opened in the window above the
quickfix window.  If there already is a window for that file, it is used
instead.  If the buffer in the used window has changed, and the error is in
another file, jumping to the error will fail.  You will first have to make
sure the window contains a buffer which can be abandoned.

When you select a file from the quickfix window, the following steps are used
to find a window to edit the file:

1. If a window displaying the selected file is present in the current tabpage
   (starting with the window before the quickfix window), then that window is
   used.
2. If the above step fails and if 'switchbuf' contains "usetab" and a window
   displaying the selected file is present in any one of the tabpages
   (starting with the first tabpage) then that window is used.
3. If the above step fails then a window in the current tabpage displaying a
   buffer with 'buftype' not set (starting with the window before the quickfix
   window) is used.
4. If the above step fails and if 'switchbuf' contains "uselast", then the
   previously accessed window is used.
5. If the above step fails then the window before the quickfix window is used.
   If there is no previous window, then the window after the quickfix window
   is used.
6. If the above step fails, then a new horizontally split window above the
   quickfix window is used.

					*CTRL-W_<Enter>* *CTRL-W_<CR>*