====== convertSchemaString ======
~~NOTOC~~
<WRAP right box>
== Syntax ==
  string convertSchemaString (
    string $schema,
    optional string $newVersion = NULL,
    optional string $newFile = NULL
    )
</WRAP>
===== Description =====
Call this method to convert a string containing an XML schema to a different AXMLS DTD version. For instance, to convert a schema created for an pre-1.0 version for AXMLS (DTD version 0.1) to a newer version of the DTD (e.g. 0.3). 

If no DTD version parameter is specified, the schema will be converted to the current DTD version. If the newFile parameter is provided, the converted schema will be written to the specified file.

The method always the result of the conversion, even if an output file name is specified, or false if the conversion fails