AutoCAD Map 3D :: Creating Annotation For Pipe Diameter On Water Main Atlas

I'm creating Annotation for pipe diameter on a water main atlas.  I have spans of pipe that are 50-200 feet in length. I often don't want the Annotation for pipe size to be placed at the midpoint of the line segment.  I'd prefer it to be placed at the location where I 'select' on the feature. It seems like .LAGELPT, .CENTER, AND .CENTROID all place Anno at the midpoint of the line.  X1,Y1 places Anno at the start of the line.  X2,Y2 places Anno at the end of the line.

Is there an Expression String or Property I couldspecify, that would place the Annotation at the point where the feature was selected on-screen?