XSL insertion of escape character in text file

Hi all,

How can I, from XSL, insert an escape character in the output file?
I have tried to use CDATA, but the XML parser complain about non-unicode characters.
Here is the section that fails:

- <xsl:template match="*/mail">
<![CDATA[  ]]>
60
<![CDATA[  ]]>
S
<xsl:value-of select="text()" />
<![CDATA[ ]]>
</xsl:template>


The square is hex value 1b, escape.
It seems that the XML-parser won't accept control code characters (hex values < 20)

The xsl is produced by a C++ program, and the escape character is inserted with character escaping (\033).

Per