Update runtime files.
diff --git a/runtime/doc/os_390.txt b/runtime/doc/os_390.txt
index 8dce4a5..42c8a8b 100644
--- a/runtime/doc/os_390.txt
+++ b/runtime/doc/os_390.txt
@@ -10,7 +10,7 @@
 2. Putty and Colors                     |zOS-PuTTY|
 3. Motif Problems			|zOS-Motif|
 4. Bugs					|zOS-Bugs|
-5. Limitations     			|zOS-limitations|
+5. Limitations				|zOS-limitations|
 6. Open source on z/OS UNIX		|zOS-open-source|
 
 Contributors: ~
@@ -75,7 +75,7 @@
   this occurs in both the terminal and gui versions.
 
 ==============================================================================
-5. Limitations     			*OS390-limitations* *zOS-limitations*
+5. Limitations				*OS390-limitations* *zOS-limitations*
 
 - No binary search in tag files.
   The program /bin/sort sorts by ASCII value by default.  This program is