diff --git a/CHANGES b/CHANGES
index fc1a15862..1fde5be65 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,7 @@
 CHANGES IN FLTK 1.1.0b12
 
 	- Drag'n'drop support for MacOS
+	- Updated Mac OSIssues documentation
 
 
 CHANGES IN FLTK 1.1.0b11
diff --git a/documentation/osissues.html b/documentation/osissues.html
index 7493ef117..6d23c7c03 100644
--- a/documentation/osissues.html
+++ b/documentation/osissues.html
@@ -580,7 +580,16 @@ internally in the same way.
 
 <P>FLTK does not access the resource fork of an application.
 However, a minimal resource fork must be created for OS 8 and OS
-X applications.
+X applications
+
+<br><br>Caution: when using Unix commands to copy or move executables,
+OS X will NOT copy any resource forks! For copying and moving use CpMac
+and MvMac respectively. For creating a tar archive, all executables
+need to be stripped from their Resource Fork before packing (DeRez fluid >fluid.r).
+After unpacking the Resource Fok needs to be reattached (Rez fluid.r -o fluid).
+
+<br><br>It is advisable to use the Finder for moving and copying and Mac archiving
+tools like Sit for distribution as they will handle the Resource Fork correctly. 
 
 <h4>Mac File Paths</h4>