heitml Error Handling & Debugging Functionality
heitml offers error handling and debugging
facilities to help you find and correct bugs, both during and after Web Page development.
heitml distinguishes between debugging and production mode. In debugging mode you develop Web Pages and heitml displays internal information to help you find and correct bugs.
Anyone else accessing your Web Site views heitml Pages in production mode. Error messages in production mode are suited for the normal user. In other words, they
do not contain disturbing technical information, but simply tell the user that the requested Page is currently offline, or the database is not accessible, etc.
This also prevents users from seeing internal details of your
programs or database. However, heitml saves the neccessay
debugging information in an error log for later analysis.
heitml roughly distinguishes between two kinds of errors, syntax errors and runtime
errors. In the case of a syntax error, heitml shows you the page in
pretty printing mode and marks errors in the
text. (In production mode the user is simply told that the page is
currently offline.)
In the case of a runtime error, heitml displays all variables and parameters
as well as the position where the error occured. You can then browse through
the page (as well as any included libraries) in pretty printing mode.
Refer to the following sub-pages in this section for further information on this topic:
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