Handle Page Content when URL is /abc/1
There are many ways you can accomplish this, here a few ideas;


You could create custom templates based on the node ID of those
pages...Examples here: http://drupal.org/node/1089656
Also you could make use of the Context module:
http://drupal.org/project/context
You could also, create content in blocks, and set them to only show
on the specified paths under the page visibility settings of any
given block you create.