Changing the class of a page
Use the Page-Change-Class method to change the class of a top-level page or embedded page.
Use the Property-Set method to change the class of an embedded page. Ordinarily, the
Property-Set method requires that the source (of values) and the destination (to receive the
values) be alike — assigning a string value into a string property, a page value into a page
property, and so on. However, you can establish the class of an embedded page using a
special Property-Set syntax.
Note: A guardrail message appears when you change
a Page's class by using the Property-Set method.