Navigation Marks
See :help marks Navigation marks allow you to mark spots in your buffer and jump back and forth between marks. This is useful if you find yourself moving around a buffer, say for table of contents, imports, or constructors.
Automatic Marks
Vim automatically creates these marks:
``or''- jump back to previous position
`.or'.- jump to last spot edited
Navigation marks
Create your own named marks using a single letter [a-z]
ma- create named mark
a `aor'a- jump to mark named
a :marks- See all available marks
The lowercase navigation marks [a-z] are remembered as long as the file remains in the buffer list. If you remove the file, or delete the line that contains a mark, that mark is erased.
File Marks
Use capital letters [A-Z] as file marks that allows you to jump to different files. Vim will even open the file if it is closed. File marks are stored in ~/.viminfo and will persist between sessions. See the video in Buffer section for an example.