GWSW Ontologie
| Naam | Het midden van de beginrioolput  |
The centre of the starting manhole  |
| URI | ABCc |
| Codering | C |
| Definitie extern | [EN13508-2+A1] the centre of the starting manhole or inspection chamber |
| [EN13508-2+A1] Het midden van de beginrioolput of ·inspectieput |
| Is type | Longitudinal reference point (coll) |