When you take exams you need to edit a lot of manifests. The Vim editor is used by default, which means you should be aware how to use shortcuts.
G - go to end of file
gg - first line of file
Shift + A - go to the end of the current row (insert mode)
Shift + C - delete everything after the cursor (insert mode)
Shift + I - go to the first letter on the current row (insert mode)
/Pod - find any instances of Pod in the file
e - jump to the end of the next word
w - jump to the start of the next word
:25 - go to the 25th row in the file