By default, vim is not displayed space, tabs, newlines, trailing space, wrapped lines and other invisible characters. We can use the following command to open the options list to display non-visible characters:
:set list
As shown below, tabs are displayed as "^ I", while the end of the line are identified as "$."
We can also use the following command to re-hide invisible characters:
:set nolist
Normally we would use the following command to show or hide invisible characters:
:set list!