Project Timeline now starts at Bar -3

Clearly I was mashing some buttons, or flailing around with my mouse. I managed get my Arrangement Timeline to start at Bar -3 instead of Bar 1. Now, every time I push the beginning of the arrangement arrow on the transport, it starts at Bar -3. I have checked my Project Setup and Preferences and it still shows the Timeline range as Bar 1. What did I manage to do? How do I fix it? I just started a new Project, and sure enough it starts at Bar -3

this may help…
goto top menu
hover over PROJECT
select PROJECT SETUP
within Project Time Displays menu, set Display Bar offset to ZERO