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+Rules for developers
+====================
+
+1. Coding style
+---------------
+SemanticScuttle uses the PEAR Coding Standards.
+While quite some parts still do not follow them, all of the
+code will be coverted to them. When developing new code,
+adhere to it.
+
+A helpful tool to check your coding style is PHP CodeSniffer,
+http://pear.php.net/package/PHP_CodeSniffer
+
+
+2. Unit tests
+-------------
+At least the service and model classes have unit tests.
+If you fix things in there, make sure you
+a) do not break the tests or
+b) fix the tests if the old behavior was broken
+
+
+3. Keep security in mind
+------------------------
+As a web application, there are several attack vectors to SemanticScuttle.
+When processing user input (form variables, URL parameters)
+be sure to convert and validate them. If you expect a bookmark id,
+there is no reason not to cast the variable to (int).
+
+Filter input, escape output.