%%Title: ./pic/persistent_date_tree.pdf %%Creator: extractbb 20160307 %%BoundingBox: 0 0 773 374 %%HiResBoundingBox: 0.000000 0.000000 773.000000 374.000000 %%PDFVersion: 1.3 %%Pages: 1 %%CreationDate: Thu Apr 19 19:27:00 2018