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+%D \module
+%D   [      file=s-pre-16,
+%D        version=1999.09.01, 
+%D          title=\CONTEXT\ Style File,
+%D       subtitle=Presentation Environment 16,
+%D         author=Hans Hagen,
+%D           date=\currentdate,
+%D      copyright={PRAGMA / Hans Hagen \& Ton Otten}]
+%C
+%C This module is part of the \CONTEXT\ macro||package and is
+%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
+%C details.
+
+%D The first version of this style was made late summer 1999,
+%D but its first usage was during a course I gave in BRNO.
+%D It's a rather simple style with a dominating background. 
+
+\setuppapersize
+  [S6][S6]
+
+\setupbodyfont
+  [pos,14.4pt]
+
+\setuplayout
+  [topspace=100pt,
+   backspace=120pt,
+   header=0pt,
+   footer=0pt,
+   width=middle,
+   height=middle]
+
+\setupbackgrounds
+  [text]
+  [backgroundoffset=80pt,
+   background=GoOn]
+
+\setupbackgrounds
+  [page]
+  [background={FuzzyCircle,Again}]
+
+\setupcolors
+  [state=start]
+
+\definecolor[gray] [s=.4]
+\definecolor[white][s=.8] 
+
+\definecolor[red]  [r=.8] \definecolor[cyan]   [g=.8,b=.8] 
+\definecolor[green][g=.8] \definecolor[magenta][r=.8,b=.8] 
+\definecolor[blue] [b=.8] \definecolor[yellow] [r=.8,g=.8] 
+
+\definecolor[PageColor][gray]
+\definecolor[TextColor][yellow]
+\definecolor[LineColor][blue]
+
+\setupinteraction
+  [state=start,
+   color=LineColor,
+   contrastcolor=LineColor]
+
+\setupinteractionscreen
+  [option=max]
+
+\setupitemize
+  [each]
+  [color=blue,
+   symbol=FuzzyDot]
+
+\startuseMPgraphic{FuzzyCircle}
+  path p ; numeric w, h, l ; 
+  w := OverlayWidth ; h := OverlayHeight ; 
+  def dd = (1 randomized (1/5)) enddef ; 
+  pickup pencircle xscaled 10pt yscaled 2pt rotated 30;
+  for i:=1 upto 50 : 
+    p := (-dd,-dd)..(dd,-dd)..(dd,dd)..(-dd,dd)..cycle ; 
+    p := p rotatedaround (center p, uniformdeviate 360) ;   
+    p := p xscaled (w/2) yscaled (h/2) ; 
+    l := length(p)/2 ; 
+    p := p cutbefore point   (uniformdeviate l) of p ;   
+    p := p cutafter  point (l+uniformdeviate l) of p ;   
+    draw p withcolor \MPcolor{LineColor} randomized (.4,1) ;
+  endfor ; 
+  picture s ; s := currentpicture xysized (w-15,h-15) ;
+  currentpicture := nullpicture ;
+  fill boundingbox s enlarged 60pt withcolor \MPcolor{PageColor} ; 
+  addto currentpicture also s ; 
+\stopuseMPgraphic
+
+\startuseMPgraphic{FuzzyDot}
+  path p ; numeric w ; 
+  w := BodyFontSize/2 ; 
+  def dd = (w randomized (w/2)) enddef ; 
+  pickup pencircle xscaled (w/2) yscaled (w/3) rotated 30 ;
+  for i=0 step 45 until 135 : 
+    p := (-dd,0)--(dd,0) ;
+    p := p rotatedaround (origin,i-w+uniformdeviate w) ;
+    draw p withcolor \MPcolor{LineColor} randomized (.3,.8) ;
+  endfor ; 
+\stopuseMPgraphic
+
+\defineoverlay [FuzzyCircle] [\useMPgraphic{FuzzyCircle}]
+\defineoverlay [GoOn]        [{\setupinteraction[click=no]\overlaybutton{forward}}]
+\defineoverlay [Again]       [\overlaybutton{firstpage}]
+
+\definesymbol 
+  [FuzzyDot] 
+  [\lower\dp\strutbox\hbox{\useMPgraphic{FuzzyDot}}]
+
+\def\Item%
+  {\par\noindent\symbol[FuzzyDot]\hskip.5em\nobreak}
+
+\setupitemize 
+  [all]
+  [packed]
+  [symbol=FuzzyDot]
+
+\def\NextIdea%
+  {\blank[back,medium]
+   \midaligned{\symbol[FuzzyDot]}
+   \blank[medium]
+   \blank[disable]}
+
+\definehead [Topic] [chapter]
+\definehead [Nopic] [title]
+
+\setuphead
+  [Topic, Nopic]
+  [alternative=middle,
+   before=,
+   number=no,
+   style=\bfb]
+
+\setuplist
+  [Topic]
+  [alternative=g,
+   interaction=all]
+
+%D Since we want a colored text, and since color directive 
+%D can spoil the spacing, we use a foregroundcolor. 
+
+\setupbackgrounds
+  [text]
+  [foregroundcolor=TextColor]
+
+%D Unfortunately this does not work when on the page colors 
+%D are set, so we play safe and say: 
+
+\setupmakeup
+  [standard]
+  [color=TextColor]
+
+\def\StartIdea%
+  {\startstandardmakeup
+   \setupwhitespace[medium]
+   \setupblank[medium]
+   \setupalign[broad,middle]}
+
+\def\StopIdea%
+  {\stopstandardmakeup}
+
+\def\Topics#1%
+  {\Nopic{#1}
+   \startcolumns
+     \setupinteraction[color=TextColor,contrastcolor=TextColor]
+     \placelist[Topic]
+   \stopcolumns
+   \page}
+
+%D Some fakes. 
+
+\def\Subject  {\Topic}
+\def\Subjects {}
+
+%D A bonus (copied from \type {s-pre-02} but with a different 
+%D vertical alignment. 
+
+\def\StartTitlePage%
+  {\startstandardmakeup
+   \bfd\setupinterlinespace
+   \setupalign[middle]
+   \vfil
+   \let\\=\vfil}
+
+\def\StopTitlePage%
+  {\vfil
+   \stopstandardmakeup}
+
+\def\TitlePage#1%
+  {\StartTitlePage#1\StopTitlePage}
+
+\doifnotmode{demo}{\endinput}
+
+\starttext 
+
+\Topics{...}
+
+\StartIdea 
+  \Topic{...}
+  ... 
+  \NextIdea 
+  ...
+\StopIdea
+
+\stoptext