The <fo:multi-properties> object is used to switch between two or more property-sets.
This object can be used to give a different layout to a portion of content. For example, when a link changes from unvisited to visited, the layout could change (this is done by changing the property-set). Note: Be careful in changing properties that causes reflowing of the text. Properties like "color" or "text-decoration" does not reflow the text.