From Roland Smeenk, "Attached you will find a large set of small typo fixes (mainly in the comments)."

examples/osgspheresegment/osgspheresegment.cpp

@@ -681,7 +681,7 @@ int main(int argc, char **argv)
     // any option left unread are converted into errors to write out later.
     arguments.reportRemainingOptionsAsUnrecognized();
 
-    // report any errors if they have occured when parsing the program aguments.
+    // report any errors if they have occurred when parsing the program arguments.
     if (arguments.errors())
     {
         arguments.writeErrorMessages(std::cout);