requirements = (<old-requirements>) && (AnnexName =?= "MyFirstAnnex" || IsCHTC)
 {endverbatim}
 
-...
+As mentioned above, the default operating system for resources acquired by =condor_annex= does not advertise =OpSysMajorVer=, but is "like" EL6.  If the old requirements do not mention =OpSysMajorVer=, add the following clause to the =requirements= line:
 
 {verbatim}
-(OpSysMajorVer isnt defined || OpSysMajorVer == 6)
+(TRUE || OpSysMajorVer)
 {endverbatim}
 
-...
+(This tautology will prevent CHTC's submit nodes from adding a requirement that =OpSysMajorVer= be 6 or 7.)
+
+If the old requirements _do_ mention =OpSysMajorVer=, they most likely include a clause of the following form:
+
+{verbatim}
+OpSysMajorVer == 6
+{endverbatim}
+
+Change this clause to the following:
+
+{verbatim}
+OpSysMajorVer =?= 6
+{endverbatim}
 
 {subsection: 4.2 Modify an Idle Job}