\documentclass[border=10pt]{standalone}
\usepackage{pstricks-add}
\begin{document}
\begin{pspicture}[showgrid](-1,3)(2,7)
\psparametricplot[algebraic]{-1}{1.56}{t|t^2+4}%
\pscurvepoints{-1}{1.56}{t|t^2+4}{L}%
\pspolylineticks[metricInitValue=1,ticksize=-2pt 2pt,Os=1,Ds=.2]{L}{ ds }{0}{40}
\multido{\iA=0+1,\iB=1+2}{20}{\Put{6pt;(LNormal\iA)}(LTick\iA){\tiny \iB}}
\end{pspicture}
\end{document}
问题:如何在平滑路径的末端标记子刻度?