...
Templates can have default values. The syntax is {<control name>=<default>} For example, this form also contains a controls labeled "Total Items in Cart" which is named "T". A template {T=0} would resolved to the value "0" when the field named T is empty otherwise it would resolve to the entered value.
The Shopping Cart section control contains templates for its Label, Hint and Help.
The Help property contains this text:
...
Before the user starts entering values into this form they will see:
As a user begins entering values into the form fields, the templates will immediately begin appearing, and the user will see:
Repeat Controls
...