This command will not be supported in future releases. This is the old command for adding a polygon to a polygon topology. The new command is MAPAP.
Use this command to add a centroid in an existing topology while maintaining the integrity of the topology information.
Respond to the prompts:
Enter the name of the topology to modify. To display a list of all loaded topologies, enter ?.
Enter the coordinates of a point or select a point on screen. The point must be in a defined area that does not currently contain a centroid.