(borrowed from CindyJo)

I was there yesterday doing a little shopping. I was hoping to get
creamy Jif, none on the shelf. I found an employee to get some help.

Anyways, he told me that you can tell if there are other displays of
shelved products in the store, by looking at the colored dot on the
shelf tag. A blue tag meant there was another display, an endcap for
example, or along the back wall (the dot tag didn't tell you where it
was).

A yellow-orange tag meant there was overstock in the back. Like maybe
it meant they had more than plenty I suppose.

I found this pretty interesting. Maybe others knew this already, but I
didn't.