Be warned that vectors are most likely to be changed by GEOS kernal also by other functions (like
<tt/GotoFirstMenu/, <tt/DoDlgBox/ and its derivatives etc.). It depends on what kernal functions
you use and which vectors you altered. Unfortunately there is no exact list for GEOS 2.0, a complete
-list for GEOS 1.x can be found in A. Boyce's Programmers' Referenece Guide mentioned before. Most of
+list for GEOS 1.x can be found in A. Boyce's Programmers' Reference Guide mentioned before. Most of
information contained there should be still valid for GEOS 2.0. When calling a function that restores
the vector you should add a <tt/hook_into_system()/ call right after it.
<p>