Bounding box and export to pdf
 

Is there a way to get OG to set the bounding box of a pdf export to match what is actually drawn rather than the nominal size of the objects? (I mean, other than setting the export area by hand.) Some of the shapes (like the adjustable arc) only draw in a part of the overall shape area, but the bounding box for pdfs include the entire shape area. This can lead to too much whitespace in exported diagrams.