How to make your pages validate when they include urls with ampersands in them.
Added on Thursday 19 Aug 2004
At some point you will run your web page through the W3C validator and get the error, "unknown entity section"; this is due to the presence of ampersands (&'s) in page link urls.
The validator assumes that this is an error because it expects an ampersand to be the beginning of an entity.
I had this very problem myself when creating the weblog links for my own CMS. For me the solution was simple; I just get the CMS script to turn all ampersands into their equivalent entities.
Unfortunately it is slightly more work to manually replace all ampersands in a page, but if you want your page to validate it is a chore you will need to attend to:
For all urls in web pages that contain ampersands, i.e., replace each ampersand (&) in urls embedded within your pages, with the equivalent entity &.
Another validation problems solved.