In an development environment, you can usually do, what you could also do "by hand" - but now you do it through a graphical interface instead. E.g. there are development environments for producing XHTML pages, making it possible to create a home page without knowing XHTML. These tools typically have problems, so you still have to understand the document (even if you can't write it), so you can change the document, removing the worst errors.
Concept last updated: 07/10 2003.
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