--- a/doc/makefile-variables.txt	Wed Feb 10 16:31:24 2016 -0800
+++ b/doc/makefile-variables.txt	Wed Feb 10 22:10:43 2016 -0500
@@ -261,6 +261,11 @@
   also be before the inclusion of ips.mk.  All variables named after the
   pattern TPNO_% are automatically available for use in package manifests
   and pkgmogrify transform files.
+* PKGREPO_REMOVE_BEFORE_PUBLISH allows automatic removal of previously
+  published components from PKG_REPO (including obsolete and renamed
+  versions). When set as PKGREPO_REMOVE_BEFORE_PUBLISH=yes removal
+  occurs immediately prior to pkgsend. default: "no"
+
 
 ---