Runtime file updates.
diff --git a/runtime/doc/vi_diff.txt b/runtime/doc/vi_diff.txt
index 5d6706b..d81e0e5 100644
--- a/runtime/doc/vi_diff.txt
+++ b/runtime/doc/vi_diff.txt
@@ -1,4 +1,4 @@
-*vi_diff.txt* For Vim version 7.3. Last change: 2010 Jul 20
+*vi_diff.txt* For Vim version 7.3. Last change: 2010 Sep 25
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -90,6 +90,7 @@
Number of different highlighting types: over 30000
Range of a Number variable: -2147483648 to 2147483647 (more on 64 bit
systems)
+Maximum length of a line in a tags file: 512 bytes.
Information for undo and text in registers is kept in memory, thus when making
(big) changes the amount of (virtual) memory available limits the number of