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diff --git a/doc/man/apply-default-acl.1 b/doc/man/apply-default-acl.1
index d8d6694..87e9803 100644
--- a/doc/man/apply-default-acl.1
+++ b/doc/man/apply-default-acl.1
@@ -34,3 +34,23 @@ contents of \fBfoo\fR are processed.
 Apply the default ACL literally; that is, don't use a heuristic to
 decide whether or not to mask the execute bit. This usually results in
 looser-than-necessary execute permissions.
+
+.SH EXIT CODE
+.P
+When given a single path, the following codes correspond directly to
+the action of the program on that path:
+.IP \fB0\ (EXIT_SUCCESS)\fR
+Success
+.IP \fB1\ (EXIT_FAILURE)\fR
+Failure due to a symlink, hardlink, or invalid/inaccessible path
+.IP \fB2\fP
+Other unexpected library error
+.P
+When called on multiple paths, the results from all paths are
+collected and the \(dqworst\(dq result is returned. For example, if
+one path succeeds and another fails, the overall result will be
+failure. If one succeeds, one fails, and one causes an error, then the
+overall result will be an error; and so on.
+.P
+When the \fB\-\-recursive\fR flag is used, the exit code is computed
+as if all affected paths were passed, depth-first, on the command-line.