diff --git a/SimPyLC/simpylc_howto.html b/SimPyLC/simpylc_howto.html
index a61d125..1eb7f3b 100644
--- a/SimPyLC/simpylc_howto.html
+++ b/SimPyLC/simpylc_howto.html
@@ -772,12 +772,12 @@ <h1><a name="_Toc508123211">Basic control elements</a></h1>
 
 <p class=MsoNormal style='margin-top:0cm;margin-right:0cm;margin-bottom:0cm;
 margin-left:35.4pt;margin-bottom:.0001pt;text-indent:35.4pt;line-height:normal'><b><span
-style='color:#00B050'># Sets the boolean value of the register to trueValue if
+style='color:#00B050'># Sets the boolean value of the marker to trueValue if
 condition is True</span></b></p>
 
 <p class=MsoNormal style='margin-top:0cm;margin-right:0cm;margin-bottom:0cm;
 margin-left:35.4pt;margin-bottom:.0001pt;text-indent:35.4pt;line-height:normal'><b><span
-style='color:#00B050'># Sets the boolean value of the register to falseValue
+style='color:#00B050'># Sets the boolean value of the marker to falseValue
 if:</span></b></p>
 
 <p class=MsoNormal style='margin-top:0cm;margin-right:0cm;margin-bottom:0cm;
@@ -795,7 +795,7 @@ <h1><a name="_Toc508123211">Basic control elements</a></h1>
 
 <p class=MsoNormal style='margin-top:0cm;margin-right:0cm;margin-bottom:0cm;
 margin-left:35.4pt;margin-bottom:.0001pt;text-indent:35.4pt;line-height:normal'><b><span
-style='color:#00B050'># Leaves the boolean value of the register unaltered if:</span></b></p>
+style='color:#00B050'># Leaves the boolean value of the marker unaltered if:</span></b></p>
 
 <p class=MsoNormal style='margin-top:0cm;margin-right:0cm;margin-bottom:0cm;
 margin-left:35.4pt;margin-bottom:.0001pt;text-indent:35.4pt;line-height:normal'><b><span