Module V.K

Element keys: the dot identifier of each element.

val control : int -> string

v0, a control node.

val region : int -> string

r0, a region marker.

val site : int -> string

s0, a site marker.

val hub : int -> string

e0, a hyperedge anchor.

val name : string -> char -> string

name "A" 'i' is "iA", an open-edge name placeholder.