Welcome to the Funtools FAQ . The primary home page for this FAQ is http://hea-www.harvard.edu/saord/funtools/faq/faq.html . ... How do I build funtools? ... Working with Binary Tables (Event Files) . ... How do I change the values of a single column for all events? How do I process events based on the region each is in? ... Working with Images . How do I process an image in double float format? How do I process an image in its native format? ... Using Filters and Regions . ...