$bt = BlockType::getByHandle('page_list'); // grabs the page list block and sets it as the object $bt in this instance
   $bt->controller->cThis = '1'; // display pages under the current page (I think) - 0 = no, 1 = yes
   $bt->controller->cParentID = '133'; // if another page enter its ID (cid) - 0 must be entered above for cThis
   $bt->controller->ctID =''; // only show pages of a particular type(collection Type ID)
   $bt->controller->num = '5'; // amount to display on a single page
   $bt->controller->includeAllDescendents = 'true'; // 'true', 'false'            
   $bt->controller->orderBy = 'display_asc'; // display_asc = Display order ascending, display_desc = Display order descending, chrono_asc = Publish date, alpha_asc = By name ascending, alpha_desc = By name descending
   $bt->controller->rss = '0'; // provide a RSS feed of the pages - 0 = no, 1 = yes
   $bt->controller->displayFeaturedOnly = '1'; // displays only pages with an attribute of is_featured uses a boolean value - 0 = no, 1 = yes
   $bt->controller->displayAliases = ''; // 0 = no, 1 = yes
   $bt->controller->truncateSummaries = '1'; // if a description is used decides whether to shorten it uses a boolean value - 0 = no, 1 = yes
   $bt->controller->truncateChars = '0'; // amount of characters to shorten the description by.
   $bt->controller->paginate = '1'; // if more pages then the controller->num decide if you would like the results paginated - 0 = no, 1 = yes
   $bt->render('templates/teasers'); // Specify a custom template