[Description] Called by the print template to start the printing process. This must be called to enable preview and printing. [Method] 
startPrint
d r a w P r e v i e w P a g e
e n d P r i n t
g e t P r i n t T a s k O p t i o n V a l u e
i n v a l i d a t e P r e v i e w
s e t P a g e C o u n t
s t a r t P r i n t