Add IIUC lemma

lizmat · lizmat · commit 2f382ff94530 · 2013-06-27T19:02:31.000+02:00
diff --git a/S99-glossary.pod b/S99-glossary.pod
@@ -261,6 +261,10 @@ thread/process.
 
 If I Remember Correctly.
 
+=head2 IIUC
+
+If I Understand Correctly.
+
 =head2 import
 
 =head2 infix
