Vim plugin NERDTree

NERD tree (4.2.0) quickhelp~
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File node mappings~
single-click,
<CR>,
o: open in prev window
go: preview
t: open in new tab
T: open in new tab silently
middle-click,
i: open split
gi: preview split
s: open vsplit
gs: preview vsplit

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Directory node mappings~
single-click,
o: open & close node
O: recursively open node
x: close parent of node
X: close all child nodes of
   current node recursively
middle-click,
e: explore selected dir

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Bookmark table mappings~
double-click,
o: open bookmark
t: open in new tab
T: open in new tab silently
D: delete bookmark

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Tree navigation mappings~
P: go to root
p: go to parent
K: go to first child
J: go to last child
<C-j>: go to next sibling
<C-k>: go to prev sibling

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Filesystem mappings~
C: change tree root to the
   selected dir
u: move tree root up a dir
U: move tree root up a dir
   but leave old root open
r: refresh cursor dir
R: refresh current root
m: Show menu
cd:change the CWD to the
   selected dir
CD:change tree root to CWD

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Tree filtering mappings~
I: hidden files (off)
f: file filters (on)
F: files (on)
B: bookmarks (off)

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Custom mappings~

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Other mappings~
q: Close the NERDTree window
A: Zoom (maximize-minimize)
   the NERDTree window
?: toggle help

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Bookmark commands~
:Bookmark <name>
:BookmarkToRoot <name>
:RevealBookmark <name>
:OpenBookmark <name>
:ClearBookmarks [<names>]
:ClearAllBookmarks

# move to a directory where you want to bookmark
:Bookmark name
# To display bookmarks
B

" For mouse click in NERDTree
:set mouse=a
let g:NERDTreeMouseMode=3 

# check your pwd/current working dir
:pwd
# go to a directory in NERDTree and change the working directory
cd
# display only your working directory
C