--- bin/ln/ln.1	(revision 268922)
+++ bin/ln/ln.1	(working copy)
@@ -78,9 +78,12 @@ to a file is one of the differences between a hard
 The options are as follows:
 .Bl -tag -width flag
 .It Fl F
-If the target file already exists and is a directory, then remove it
-so that the link may occur.
-The
+Attempt to remove directorie with the same
+.Xr basename 3
+as that of
+.Ar source_file
+under
+.Ar target_dir .
 .Fl F
 option should be used with either
 .Fl f
@@ -291,9 +294,9 @@ implementations.
 .Pp
 The
 .Fl F
-option is a
-.Fx
-extension and should not be used in portable scripts.
+option is an
+extension and its behavior is specific to
+.Fx .
 .Sh SEE ALSO
 .Xr link 2 ,
 .Xr lstat 2 ,
@@ -316,3 +319,7 @@ An
 .Nm
 command appeared in
 .At v1 .
+.Pp
+.Fl F
+option first appeared in
+.Fx 6.1 .