Thank you for your help Peter Funk.
A while back, I was able to make a zoom to point button using the information you posted.
Something I've mentioned as a "Wish List" item is that any "Zoom To" feature will also highlight the specific item that is being "zoomed to"... For example, when I get errors in the Event Viewer, and click there on "Zoom to....", I'd like to see some highlighting on those features. As it is right now, clicking on "Zoom To..." will usually do that, but there are SO MANY items in the same spot that it's very difficult to determine which one is causing the error.
It could also be very useful if there was some way to control the zoom scale, as is possible (and has been way back to C3D 2008) with the Sincpac-C3D ZOOMPT command, which uses your current Annotative Scale + your user-selected factor to control how much zoom happens. This command doesn't highlight the "zoomed to" entity, though, which would be the REALLY useful feature...