Webmasters have to make sure that the code of their website is excaping several characters correctly. Failure to do so can lead to all kinds of problems from display errors to functions that are not working correctly because of this (check out The XML Page Cannot Be Displayed article for an example of things that [...]
A standard compliant web browser and editor: Amaya
Some web browsers don’t fully respect web standards and many WYSIWYG HTML editors produce absolutely revolting code. W3C set out standards as to how HTML (and XHTML etc) should appear and whilst some choose to ignore these, some are devoted to the following of these standards.
Sticking to standards can therefore lead to issues with certain [...]

