Statute 5 - ISDE Symposia and Summits
a) The ISDE Symposia and Summits are open to all persons interested in any aspect of Digital Earth.
b) The ISDE Symposia will normally be held every two years, in odd-numbered years.
c) The ISDE Summits will normally be held every two years, in even-numbered years. They may be convened
more frequently, should the need arise.