[document web]
++[section]
++++[entry] name='Invalid is true'
++++[entry] name='Invalid is false'
++++[entry] name='Invalid is not set'
++[paragraph]
++++[static] name='Error for invalid input'
++[paragraph]
++++[static] name='Error for input which is not invalid'
++[paragraph]
++++[static] name='Error for input with invalid not set'