Nothing special at all. Unnamed sidebar blocks will show the text <Unnamed> instead of just showing nothing, thus making them renamable
/* CSS file for cell dialog in the table plugin */
.panel_wrapper div.current {
height: 200px;
}
.advfield {
width: 200px;
}
#action {
margin-bottom: 3px;
}
#class {
width: 150px;
}