This blog has personalition features for you, the reader. Below is a key of what all the icons mean and which aspects of the layout they change.

Set font size to medium (default)
Set font size to large
Set font size to x-large
$Set layout to 'Jello' (min-width:770px \ max-width:1200px)$ Set layout to "Jello" (min-width:770px \ max-width:1200px) (default)
Set layout to "Fluid" (width: 100%)
Set layout to "Fixed" (width: 760px)
Place navigation on the right of the screen (default)
Place navigation on the left of the screen