+ Corrections of error pointed out by Luk Vandelaer

docs/user.tex

@@ -3014,10 +3014,12 @@ The collection has reached its maximal size, and you are trying to add
 another element. (objects unit)
 \item [216  General Protection fault]
 You are trying to access memory outside your appointed memory.
-\item [217 Unhandled expetion occurred]
+\item [217 Unhandled exception occurred]
 An exception occurred, and there was no exception handler present.
 The \file{sysutils} unit installs a default exception handler which catches
 all excpetions and exits gracefully.
+\item [227 Assertion failed error]
+An assertion failed, and no AssertErrorProc procedural variable was installed.
 \end{description}