Spider – Spanned Absences in Back Office sensitive to Spider Roll Marking Posted on October 28, 2013 by studentmanagementsoftware 1 Available in Spider version 2013.10 and above (Post Conference release available in October) PCSchool has now made absences with a spanned date range in Back Office sensitive (and modified) to roll marking in the Spider. Share this:TwitterFacebookLike this:Like Loading...