Hello.

I'm still in the newbie category with ConTeXt, and am getting to grips with bookmarking of PDFs for the first time ever.  The following example gives the correct hierarchy of subordinated bookmarks - part, chapter, and section, each progressively indented in the bookmark column at the left.  However, I don't want the parts to have numbers at all, and I want the chapters to be numbered 1, 2, etc. (not 1.1, 1.2, etc.).  If I ever go live with ConTeXt, the sections won't have any numbers at all (and I can see how to set this up), but in this default example I would like them also to shift up one decimal place:  1.1., not 1.1.1, and so on.  I'm guessing there's an option in \part that I should be invoking, but I don't immediately see what that is (there doesn't seem to be a \startpart...\stoppart to allow the relatively straightforward customization that we get with chapters and sections).  Here is the example:

\setupinteraction

  [state=start]

 

\setupinteractionscreen

  [option=bookmark]

 

\placebookmarks[part,chapter,section]

 

\starttext

      \part[title=Introduction,bookmark=Introduction,number=off]

      \noheaderandfooterlines

      INTRODUCTION

\page

      \noheaderandfooterlines

\page[odd]

    \startchapter[title=First Chapter]

      \noheaderandfooterlines

        \input tufte

      \startsection[title=First section]

      \input knuth

      \stopsection

      \startsection[title=Second section]

      \input zapf

      \stopsection

    \stopchapter

\page[odd]

    \startchapter[title=Second Chapter]

      \noheaderandfooterlines

        \input tufte

      \startsection[title=First section]

      \input knuth

      \stopsection

      \startsection[title=Second section]

      \input zapf

      \stopsection

    \stopchapter

\page[odd]

\part[title=PART II,bookmark=Part II,number=off]

      PART II

      \noheaderandfooterlines

\page

      \noheaderandfooterlines

\page[odd]

    \startchapter[title=Third Chapter]

      \noheaderandfooterlines

        \input tufte

      \startsection[title=First section]

      \input knuth

      \stopsection

      \startsection[title=Second section]

      \input zapf

      \stopsection

    \stopchapter

\page[odd]

    \startchapter[title=Fourth Chapter]

      \noheaderandfooterlines

        \input tufte

      \startsection[title=First section]

      \input knuth

      \stopsection

      \startsection[title=Second section]

      \input zapf

      \stopsection

    \stopchapter

\stoptext