What is a global condition?
A global condition is a condition that is available for re-use throughout the document. Global conditions are the only type of conditions that appear in the Structure area, and that are thus available for re-use by other elements in the document.
You create global conditions for conditions you expect to use more than once in the document. For example, consider a form letter that includes a few pages of information relevant only for residents of Kyoto. You create a global condition to test for the presence of “Kyoto” in the client address in the data page, and associate the condition with each of the relevant pages.