+\tikzstyle{pkt}=[
+ fill,
+ below=-.5\baselineskip,
+ font=\scriptsize,
+ draw,
+ dash pattern=on 2pt off 2pt,
+]
+\tikzstyle{clipkt}=[pkt,
+ below left=-.5\baselineskip and 0cm,
+ pos=0.05,
+]
+\tikzstyle{devpkt}=[pkt,
+ below right=-.5\baselineskip and 0cm,
+ pos=0.05,
+]
+\begin{tikzpicture}[
+ every node/.style={fill=white, font=\small},
+ every picture/.style=ultra thin,
+ >=latex,
+ semithick
+]