lsdException (Latent Style Exception)

Hi all,

I have a question about the lsdException element. According to the Markup Language Reference of the Office OpenXML specification (from ECMA), the lsdException (Latent Style Exception) element specifies properties to be applied to a latent style. And a "latent style" is defined as a known style definition not included in the document.

In Word 2010, however, if I create a new document, type a line of text, select it, and give it the Title style (by clicking on that style on the ribbon), when I look at the saved file, I see the following:

1) The Title style is defined in the Styles part and used in the document. (This is expected.)

2) The Title style is also listed in the latentStyles element as an ldsException element. (I would not have expected this.)

Is this a Word bug? Is the lsdException element for the Title style important to Word for any reason in this instance? If this is not a Word bug, how does Word use the latentStyles (parent of lsdException) element in DOCX files?

Thank you for your help.

Jim