Description of problem:

I want to be able to use the <abstract> tag without the implicit title of "Abstract" appearing at the top.  Can we make use of the <title> child tag of <abstract> for the title, and have no title if none is supplied ?

Many books have content at the start of each chapter (and some sections) like "Read this chapter for instructions on how to do X".  I would like to be able to mark that up as an abstract so that it is visually distinct for the reader.  I think <abstract> is the appropriate tag for this usecase.

Version-Release number of selected component (if applicable):
1.6

Steps to Reproduce:

1. in book_info.xml
<abstract>
<title>Abstract</title>
<para>This book is about the product X</para>
</abstract>

2. in installation.xml
<chapter>
<title>Installation</title>
<abstract>
<para>Read this chapter to learn how to install the product</para>
</abstract>
....

Actual results:

*Abstract*
This book is about the product X

*Chapter 1. Installation*
Abstract
Read this chapter to learn how to install the product

Expected results:

*Abstract*
This book is about the product X

*Chapter 1. Installation*
Read this chapter to learn how to install the product


Additional info: