Why use XHTML 1.0?
There might not be an immediate business need forcing you to move to XHTML. However, it is recommended that you start using XHTML for new developments or modifications. This approach will make it easier to migrate to XHTML 1.0 or future versions of XHTML so that you can quickly take advantage of new business opportunities.
New user agents, like portable devices, will probably use newer versions of XHTML. Because XHTML conforms to XML syntax rules, the XHTML generated by LANSA for the Web can be processed by XML parsers.
The compatibility between XHTML 1.0 and HTML 4.0 allows you to continue to support all of your existing browser interfaces while allowing for future computing devices.