The rich text editor provides text formatting functions that alter the appearance of published content. The CSS style sheet in a Web site controls the appearance of text at a global level, but the rich text editor can override those controls for specific text elements.
See the following example:

You can use pull-down menus in the editor to apply specific styles and specify a font and a font size.
You can use the buttons in the editor to perform following functions:
Cut text and
save it to the clipboard, removing the original.
Copy text
to the clipboard, leaving the original text in place.
Paste text
from the clipboard. You can also right-click and select Paste as
Plain Text.
Remove all the contents in the text editor window.
Make
selected text bold.
Make
selected text italic.
Make
selected text underlined.
Make
selected text superscripted.
Make
selected text subscripted.
Add an ordered list.
Add an unordered list.
Indent
selected text.
Outdent
selected text.
Find
and replace text. The Find/Replace window opens. Type the text that you want
to find in the Find field and, if you are replacing
that text, type the replacement text in the Replace with field.
You can search forward or backward and specify whether you want your search
to be case-sensitive or search for parts of words. (This functionality may
be limited on Linux systems.)
Add
or create hyperlinks. For more information about hyperlinks, see Add
a Reference or Hyperlink.
Add
an image. The Add Image window opens. Browse for the image that you want to
add and click OK.
Add
a table. The Add Table window opens. Specify the table parameters and click OK.