document external template format change.

git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@25246 a592a061-630c-0410-9148-cb99ea01b6c8

diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index 409efbffc1b30e806b8530a5e6f00610c41619e6..c3db557412a9315dbdeb67697fef02c46ad3a390 100644 (file)
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -8,6 +8,10 @@ been applied because of incomplete testing.
 Interface changes
 -----------------
 
+The external template format recognize now a new tag: 'Preview'. This tag is
+used to define how an external material should be previewed in LyX. For more detail,
+see the 'external_templates' file in the resource directory of LyX.
+
 Some of the LyX functions have changed names:
 
 - A new LFUN_SPECIALCHAR_INSERT has been implemented that obsoletes the