+.It Fl W Ns Cm unsafe-types
+When passing variadic parameters via
+.Li ...(N)
+it can happen that incompatible types are passed to functions. This
+enables several warnings when static typechecking cannot guarantee
+consistent behavior.
+.It Fl W Ns Cm breakdef
+When compiling original id1 QC, there is a definition for `break`
+which conflicts with the 'break' keyword in GMQCC. Enabling this
+warning will print a warning when the definition occurs. The
+definition is ignored for both cases.