DocBook: improve doc for MathML prefix.

diff --git a/lib/doc/Additional.lyx b/lib/doc/Additional.lyx
index db98f2537ade6381d68986bf1b70d842dd2a46c8..d6c91e56a71615eaa2fa4e1049686afeb8fe0e36 100644 (file)
--- a/lib/doc/Additional.lyx
+++ b/lib/doc/Additional.lyx
@@ -6122,7 +6122,7 @@ m:math
 
 \begin_layout Itemize
 
-\change_inserted 1075283030 1616535102
+\change_inserted 1075283030 1616620405
 With the 
 \family typewriter
 mml
@@ -6134,6 +6134,14 @@ m
  option, but with 
 \family typewriter
 mml
+\end_layout
+
+\begin_layout Standard
+
+\change_inserted 1075283030 1616620470
+This option is especially useful if you want \SpecialChar LyX
+ to match your personal style
+ or to work with buggy software that only accepts one prefix for MathML.
 \change_unchanged
 
 \end_layout