add tip about limits

Author: jmckenna

en/mapfile/symbology/construction.txt

@@ -23,9 +23,9 @@ Abstract
 This Document refers to the syntax of *map* and *symbol* files for
 MapServer 6.  The first version of the document was based on the
 results of a project carried out at the University of Hannover,
-Institute of Landscape and Nature Conservation, in 2004. It was initiated by
-Mr. Dipl. Ing. Roland Hachmann. Parts have been taken from a study
-carried through by Karsten Hoffmann, student of Geography and
+Institute of Landscape and Nature Conservation, in 2004, using MapServer 4. 
+It was initiated by Mr. Dipl. Ing. Roland Hachmann. Parts have been taken 
+from a study carried through by Karsten Hoffmann, student of Geography and
 Cartography at the FU Berlin. In the context of a hands-on training in
 the company GraS GmbH, Mr. Hoffman mainly dealt with the development
 of symbols.  (`Download study report`_ in German) His degree
@@ -2226,7 +2226,7 @@ using `OUTLINECOLOR`, `SYMBOL` and `GAP`.
 
 
 Examples (MapServer  4)
-========================
+=======================
 
 The examples in this section were made for MapServer 4.
 
@@ -2239,9 +2239,14 @@ The examples in this section were made for MapServer 4.
 The symbols were created with *map* files and *symbol* files
 (`download_old_symbols`_). If you want to use these MAP files please
 note, that your MapServer must at least be able to handle 50
-symbols. Otherwise you will get an error while loading the *symbol*
+symbols, otherwise you will get an error while loading the *symbol*
 files.
 
+.. tip::
+
+  MapServer versions >= 5 have no limits for classes, styles, symbols, 
+  or layers.
+
 .. _`download_old_symbols`: https://download.osgeo.org/mapserver/docs/vortrag_demo.zip