Used in the <l:side-panel> to draw a box with a title. The box is drawn as a table, and the body of this tag is expected to draw a series of <TR>s to fill in the contents of the box. Title of the box. Can include HTML. Specify the number of columns in the table (so that the title can stretch to the entire table width. @id of the table, if specified. Pane table class specification. Footer of the box. Can include HTML.
${attrs.collapsedText}