So far all of the examples generate the same page for any object.
The real point of templates becomes
clear when they refer to the properties of the object whose
page is being generated.
Suppose we have an object that has a property called name
(as built-in section and item objects do). To refer to a property
within a template, we use @ followed by the property's name.
So in this template,
the image generated by the RENDER expression will contain whatever
has been entered in the name field of the current object.
TITLE "My Name Is"
TEXT "Hello, my name is "
IMAGE source RENDER text @name