Design

Since "Properties" has a wrench in it's icon, too, the "Styles and Formatting" icon should be changed.

Ideas:

• triangle ruler & the letter T
• Letter & a gear
• A quill
• A nib
• A blueprint of the letter T (similar to the master page icon in Impress)

The most important thing to consider is probably the difference between direct formatting and styles. The suggestions above would probably also fit for "Properties". Maybe both could use the same base icon with one added element in the "Styles & Formatting" icon.