diff --git a/preamble.tex b/preamble.tex
index 4cba9b279..d065502d5 100644
--- a/preamble.tex
+++ b/preamble.tex
@@ -199,6 +199,7 @@
     % 3.7.3 #event-related-operators-with-function-syntax (except initial) and 4.8 #predefined-types-and-classes
         connect,der,delay,cardinality,homotopy,semiLinear,inStream,actualStream,spatialDistribution,getInstanceName,%
         terminal,noEvent,smooth,sample,pre,edge,change,reinit,%
+        previous,hold,subSample,superSample,shiftSample,backSample,noClock,firstTick,interval,%
         Real,Integer,Boolean,String},%
     comment=[l]{//}, % comment lines
     morecomment=[s]{/*}{*/}, % comment blocs