GRAPH-NODEs API

Hi

it looks like the following is the full API for GRAPH-NODEs

CL-USER 3 > apropos "GRAPH-NODE-" "CAPI"
CAPI::GRAPH-NODE-CURRENT-POSITION (defined)
CAPI::GRAPH-NODE-ADJACENT-SIBLING (defined)
CAPI::GRAPH-NODE-BACK-EDGES (defined)
CAPI::GRAPH-NODE-PARENT (defined)
CAPI::MAKE-GRAPH-NODE-ELEMENT (defined)
CAPI::COMPUTE-GRAPH-NODE-CHILDREN (defined)
CAPI:GRAPH-NODE-OUT-EDGES (defined)
CAPI:GRAPH-NODE-Y (defined)
CAPI:GRAPH-NODE-HEIGHT (defined)
CAPI:GRAPH-NODE-WIDTH (defined)
CAPI:GRAPH-NODE-IN-EDGES (defined)
CAPI:GRAPH-NODE-X (defined)
CAPI:GRAPH-NODE-CHILDREN (defined)


How reliable is it to write a GRAPH-NODE-PARENTS (note the plural)  
with an inverse semantic of the exported GRAPH-NODE-CHILDREN?

Thanks


--
Marco Antoniotti