-<tt>_Unwind_Resume</tt>. Each of these functions require a reference to the
-exception structure.</p>
+<tt>_Unwind_Resume</tt>. Each of these functions requires a reference to the
+exception structure. Note that the most general form of an
+<a href="#llvm_eh_selector"><tt>llvm.eh.selector</tt></a> call can contain
+any number of type infos, filter expressions and cleanups (though having more
+than one cleanup is pointless). The LLVM C++ front-end can generate such
+<a href="#llvm_eh_selector"><tt>llvm.eh.selector</tt></a> calls due to inlining
+creating nested exception handling scopes.</p>