How does nested syntax in property attribute work

[Shamdasani Nimmi-ANS004]

Hi,

In some of the e-mails I have seen nested syntax being used for property attribute, 
e.g.,

<html:text property="mailingAddress.street"/>

what does that mean? Is it that the getMailingAddress() method of the bean will be 
called, and then what is ".street" for?

-Nimmi