vim mark

http://vim.wikia.com/wiki/Using_marks

Command	Description
ma	set mark a at current cursor location
'a	jump to line of mark a (first non-blank character in line)
`a	jump to position (line and column) of mark a
d'a	delete from current line to line of mark a
d`a	delete from current cursor position to position of mark a
c'a	change text from current line to line of mark a
y`a	yank text to unnamed buffer from cursor to position of mark a
:marks	list all the current marks