Looking at a bigger picture were i could zoom in properly. The buttons next to it are for the DVE settings. So BORD in this sound like the "border" of the DVE. So i guess when you are setting up a DVE you could hit this button for the settings of the Border( thinkness, type of line, color, bevelled, etc etc)
you can only see this when the DVE is active. So setup an DVE so you can see it on screen.