An EditBlock is an area of content on the page that is directly editable. The content of the EditBlock in the browser overwrites the corresponding EditBlock in the page's file on the server.
Editblocks must be added to the source code of the file.
Once an EditBlock is on a page only areas inside of EditBlocks or IncludeBlocks can be edited unless the user is a Super User.
An Editblock must contain a closing comment after the block's close tag.
An editblock may be placed anywhere on a page. An editblock's open and close may not span across other element (you can not start an editblock in one table cell and close in another table cell.