Improve format specification for 616.

diff --git a/development/FORMAT b/development/FORMAT
index 56cd4369f5999a838d9a9823f698f45c85194357..8adbb250a1c9eee981823e250d7c0f6174bd6b69 100644 (file)
--- a/development/FORMAT
+++ b/development/FORMAT
@@ -20,6 +20,9 @@ changes happened in particular if possible. A good example would be
        * Format incremented to 616: Do not output LaTeX for a macro if the LaTeX part is empty
        - This allows the user to define the LyX display for LaTeX commands
          that are already defined (e.g., in user preamble or a package).
+       - No substantive change to file format. Format change just in case someone defined a
+         math macro with an empty LaTeX field. In that case, lyx2lyx adds {} to the LaTeX 
+         part on conversion and removes the macro altogether on reversion.
 
 2023-04-02 Jürgen Spitzmüller <spitz@lyx.org> 
        * Format incremented to 615: Unifiy spelling of "acknowledgment" styles