- <header><?php echo $page['header']; ?></header>\r
- <nav><div id="top-margin"></div><?php echo $page['nav']; ?></nav>\r
- <aside><?php echo $page['aside']; ?></aside>\r
- <section><?php echo $page['content']; ?>\r
+ <?php if(x($page,'nav')) echo $page['nav']; ?>\r
+ <aside><?php if(x($page,'aside')) echo $page['aside']; ?></aside>\r
+ <section><?php if(x($page,'content')) echo $page['content']; ?>\r