Adjustable radio transcript font size to support reading from across-the-room

[interi-mhickman]

I use multi viewer to display stats, in-car cameras, and radio transcripts while watching the race on TV. Requesting the ability to increase only the radio transcript panel / window font size to enable it to be readable from across the room. I currently use Ctrl-+ to zoom the text, but this zooms all content across all Multiviewer windows.