How do you remove soldermask from a Trace (RF Track) ?

Is there a tutorial on how to use it ?

I don't see a file export IPF, I see IPC, IDF and IDX in the export options only.

you can create a shape from clines of your traces.

Defining path for critical signals | OrCAD PCB Designer - YouTube

then you can copy the shape to the soldermask of your component.

Its should be self explanatory, invoke the command, select the track you want to add the keepout to and fill in the form (PDF attached). I would add that this only creates a routekeepout, you would then need to copy that to the soldermask_top or _bottom layer. ClineToRouteKeepout_help.pdf

Steve, does it put a soldermask dam between the component pads and the trace?  Looking at the pictures, it doesn't look like it does.  Here is what I normally do to make the contract mfg happy.  If I remove the gap, they always complain