Update runtime files
diff --git a/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index 98127af..e0919b8 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -1,4 +1,4 @@
-*syntax.txt* For Vim version 8.2. Last change: 2022 Apr 06
+*syntax.txt* For Vim version 8.2. Last change: 2022 Apr 24
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -2197,6 +2197,15 @@
mv_finance mv_logic mv_powseries
+MARKDOWN *ft-markdown-syntax*
+
+If you have long regions there might be wrong highlighting. At the cost of
+slowing down displaying, you can have the engine look further back to sync on
+the start of a region, for example 500 lines: >
+
+ :let g:markdown_minlines = 500
+
+
MATHEMATICA *mma.vim* *ft-mma-syntax* *ft-mathematica-syntax*
Empty *.m files will automatically be presumed to be Matlab files unless you