.SBGF File Extension
What is an SBGF file?
Settings file created and used by Grapher, an online graph plotting program; contains settings for a graph, which includes points, axes, graph plotting options, and appearance information.
The Grapher online program can plot any number of coordinates and allows you to customize the background color, line color, text color, and more. The SBGF file enables you to save all your settings to be used at a later time.