Update README.md

diff --git a/README.md b/README.md
index 0e795918174a4b90e72fc3d6e96b33ab89564210..98565f0e599b9af30defccdfe65d3a798c0dac17 100644 (file)
--- a/README.md
+++ b/README.md
@@ -2972,6 +2972,8 @@ If `Enabled` is set to false, the built-in PDF viewer is disabled.
 
 If `EnablePermissions` is set to true, the built-in PDF viewer will honor document permissions like preventing the copying of text.
 
 
 If `EnablePermissions` is set to true, the built-in PDF viewer will honor document permissions like preventing the copying of text.
 

+Note: DisableBuiltinPDFViewer has not been deprecated. You can either continue to use it, or switch to using PDFjs->Enabled to disable the built-in PDF viewer. This new permission was added because we needed a place for PDFjs->EnabledPermissions.
+

 **Compatibility:** Firefox 77, Firefox ESR 68.9\
 **CCK2 Equivalent:** N/A\
 **Preferences Affected:** `pdfjs.diabled`,`pdfjs.enablePermissions`
 **Compatibility:** Firefox 77, Firefox ESR 68.9\
 **CCK2 Equivalent:** N/A\
 **Preferences Affected:** `pdfjs.diabled`,`pdfjs.enablePermissions`