Why can't I make my text do certain things?

Kupu, Plone's default text editor, only allows certain text styles by default.

You can choose from formatting buttons, such as: Bold, Italic, an ordered list, an unordered list, or a definition list.
Kupu also contains a drop down menu with predefined styles. The site administrator can also add custom styles to this drop down.

The default defined styles* are:

• Normal - regular text. 69%
• Heading -  18 px, bold, bottom border
• Subheading - 15 px, bold
• Literal - 12 px,background color with a border, text is courier new
• Discreet - 10 px, gray
• Pull quote - 12 px, bold, yellow, right aligned, left-border blue
• Call out - 12 px, bold, yellow
• Highlight- normal text with a background of pale yellow.

* Note that these styles are based off of the base Plone theme. If customizations have been made to your theme, these styles may change.