Okay. Global search on my system reveals the following additional info...
In that file, find the model.publish(rh.consts('KEY_LNG') section. The property for this text is"HomePageSubtitle".
That's a hacky/kludgey way to update it though. Is there some place in the RH2019 application UI where folks can edit/change this?
Sorry, apparently we have changed forum platforms and things no longer work as they once did. Grrrrr
Back in a moment
Look in the LNG file (Labels).