Code
vim
ma " set mark 'a' at cursor (lowercase = local to buffer)
mA " set mark 'A' (uppercase = global, file-level)
'a " jump to line of mark a (linewise)
`a " jump to exact column of mark a
:marks " list marks in current buffer
:delmarks a " delete mark a
:delmarks! " delete all lowercase marks
" Built-in marks
`. " position of last change
`` " position before last jump (toggle)
`< `> " start/end of last visual selection
`[ `] " start/end of last yanked/pasted text
`^ " position of last insert-mode exit