The Responsive HTML5 output doesnot have the same TOC hierarchy as the FM book file.

Hello,

I am a novice in structured DITA authoring and I am facing a problem which I want to show with screenshots.

I created a DITAMAP with Preface DITA file and inside that 3 xml files as shown below:

Then I converted the DITAMAP to Webhelp.book as shown:

But, when I publish this to Responsive HTML, all the hierarchy (indentation where the 3 xml outputs must come inside the preface) is missing in HTML output TOC as shown:

I dont know whether I am going wrong somewhere or is it a limitation?

Can somebody help in this regard?

Thanks in advance,

Vinayakrishna

India