As the name suggests.. the Designer "Canvas" is where the art of design occurs. Elements such as graphical logos, document barcodes, data snippets, etc. can be strategically placed on the page. Further, data can be applied dynamically on the page. Using the example below you'll observe that we have a 'Designer Item' (snippet) named 'DatePageNum

 

Click For Larger Image

click for larger image

 

Here are the Properties of the 'DatePageNumBlock' text snippet.

Click For Larger Image

click for larger image