Drupal渲染顺序 - 如何定义渲染顺序？

I'm building a site with Drupal and I have a small problem. I'm rendering a form using hook_menu. The form renders fine and all is good. I am then adding some more markup to the page using hook_page_alter(). Hook_page_alter looks like this:I'm building a site with Drupal and I have a sm