#Start visual mode, mark lines, then do a command ( like y-yank )
v
#start line-wise visual mode
V
#Move to other end of marked area
o
#Start visual block mode
Ctrl+v
#Move to other corner of block
O
#Mark a word
aw
#Mark a block with ()
ab
#Mark a block with {}
aB
#Mark inner block with ()
ib
#Mark inner block with {}
iB
#Exit visual mode
Esc
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