diff --git a/documentation/content/en/books/porters-handbook/makefiles/chapter.adoc b/documentation/content/en/books/porters-handbook/makefiles/chapter.adoc
--- a/documentation/content/en/books/porters-handbook/makefiles/chapter.adoc
+++ b/documentation/content/en/books/porters-handbook/makefiles/chapter.adoc
@@ -4608,7 +4608,7 @@
 
 ====
 
-Sometime, only some version of another port is incompatible, in this case, use the full package name, with the version, and use shell globs, like `*` and `?` to make sure all possible versions are matched.
+Sometimes, only certain versions of another port are incompatible.  When this is the case, use the full package with the version.  If necessary, use shell globs like `*` and `?` so that all necessary versions are matched.
 
 [[conflicts-ex2]]
 .Using `CONFLICTS*` With Globs.
@@ -4631,6 +4631,13 @@
 package:deskutils/gnotime[] does not have any conflicts line because its current version does not conflict with anything else.
 ====
 
+The variable `DISABLE_CONFLICTS` may be temporarily set when making targets that are not affected by conflicts.  The variable is not to be set in port Makefiles.
+
+[source,bash]
+....
+% make -DDISABLE_CONFLICTS patch
+....
+
 [[install]]
 == Installing Files