In all of the years I have used Inventor, first time I believe actually wanting what I am suggesting.
I have an application where I want to label certain center lines. Basically creating a skeletal sketch within the sketch of the model. As not to confuse what I am creating I thought it would be nice to be able to label what each center line represents without Inventor thinking I am creating another profile for a feature. So, why not have the ability to just place a leader like we do in a drawing.
