This links to an xml file with a transformation that selects buildings in Lexington, Bedford, or Burlington using xsl:choose and sorts them by town. Each town displays in a different color.
Independent Living using xsl:choose
This links to an xml file that selects only those buildings that offer retirement living (RET) and sorts by map number, an attribute of building.
Retirement Living by Map Number
This links to an xml file with a transformation that uses an entity reference rather than listing the data again. It also provides a sum of map numbers. This works in Explorer and Netscape but not in Firefox.