If you mouse over the circle, Stylus Studio displays the XSLT represented by the link (xsl:value-of select="/books/book/@pubdate"/, for example).

l If you type an XSLT instruction in the XSLT source that is not represented by the XSLT mapper, no representation of that XSLT instruction is displayed on the Mapper tab. The code remains as part of the XSLT source, however.

l If you start creating an XSLT instruction in the mapper but do not completely define it (say you specify only the input port for an xsl:for-each instruction, for example), it is not represented in the XSLT source, and it is removed from the XSLT mapper if you leave the Mapper tab and then return to it.