The format to specify tms layers is tms|url[,more-urls]|title|options; currently only the attribution option is supported. Also, only OpenStreetMap like layers can be used.
The map at the bottom, using an OpenCycleMap layer, is defined as follows:

[map layers="1" 1="tms|http://a.andy.sandbox.cloudmade.com/tiles/cycle/|OSM Cycle Map|attribution=<b>Cycle Map</b>" center="5,52" zoom="10" maxextent="-10,30,30,70" /]