Fixed caption typography again to account for 2em offset when comparing boxsize with textwidth. Reported by Jeannette Barnes. Title is mixed case, uses large bold font. Author names are mixed case. Affiliations are mixed case, use italic font.
Abstract title is mixed case, uses bold font.
Sections are numbered, heads are mixed case, bold font. Acknowledgments title is mixed case, uses bold font, text is run-in. Figure and table captions use mixed case, arabic numbers. The appearance is somewhat different from the original PASP style, which had its heritage obviously in the IBM Selectric. The newer typography takes advantage of the versatility of laser printers.