This command allows the displaying of spaces, tabs and new line characters as visible characters on the screen. It does not change the document but allows you to clearly distinguish between the different characters.
Spaces are shown as: '·'
Tabs are shown as: '»'
New lines are shown as: '¶'
If there is not enough room to show the '»' with the tab, the tab will appear as normal, and non visible. The color used to display these characters may be modified by going to the Layout tab and clicking on the Themes dropdown and then by clicking on Manage Themes.