| addDouble | A double with an optional prefix + |
| addPoint | A point with an optional prefix + |
| arrowType | |
| bool | |
| clusterMode | local, global, none |
| color | #rrggbb, #rrggbbaa. h.hhh s.sss v.vvv, red |
| colorList | A colon separated list of weighted color values |
| dirType | forward, back, both or none |
| double | |
| escString | Replace escape sequences in strings. |
| int | |
| layerList | |
| layerRange | |
| lblString | A lblString is either an escString or an HTML Label. |
| outputMode | |
| packMode | |
| pageDir | |
| point | |
| pointList | |
| portPos | |
| quadType | |
| rankType | |
| rect | |
| shape | shape is both, an attribute (see here) and a type. |
| smoothType | |
| splineType | |
| startType | |
| string | |
| viewPort | |