\psset{griddots=0,gridlabels=8pt,subgriddiv=5}
\psset{xunit=10mm,yunit=10mm}
\begin{pspicture}(14,26)
%	\psgrid
	\newcommand{\clr}{black}
	% master
	\newcommand{\masterx}{7}
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt]{->}(\masterx,1)(\masterx,26)
	\psset{fillcolor=\clr}
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\masterx,2)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\masterx,6)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\masterx,7)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\masterx,8)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\masterx,11)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\masterx,12)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\masterx,13)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\masterx,15)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\masterx,16)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\masterx,17)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\masterx,18)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\masterx,23)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\masterx,24)
	\rput(\masterx,0.5){
		\psset{fillcolor=white}
		\psset{fillstyle=solid}
		\psset{linecolor=\clr}
		\psset{framearc=.5}
		\psframebox{\textcolor{\clr}{white2\_master}}
	}
	% release/.../iteration_1
	\renewcommand{\clr}{ForestGreen}
	\newcommand{\featurex}{3}
	\psset{fillcolor=\clr}
	\psline[linewidth=2pt,linecolor=\clr](\masterx,2)(\featurex,3)
	\psline[linewidth=2pt,linecolor=\clr](\featurex,3)(\featurex,11)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt]{->}(\featurex,11)(\masterx,12)
	\psline[linewidth=1pt,linecolor=\clr,linestyle=dashed](\featurex,2.5)(\featurex,8.5)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\featurex,3)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\featurex,7)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\featurex,11)
	\rput(2.5,2){
		\psset{fillcolor=white}
		\psset{fillstyle=solid}
		\psset{linecolor=\clr}
		\psset{framearc=.5}
		\psframebox{\textcolor{\clr}{release/white2/I320/iteration\_1}}
	}
	% release/.../iteration_2
	\psset{fillcolor=\clr}
	\psline[linewidth=2pt,linecolor=\clr](\masterx,12)(\featurex,13)
	\psline[linewidth=2pt,linecolor=\clr](\featurex,13)(\featurex,17)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt]{->}(\featurex,17)(\masterx,18)
	\psline[linewidth=1pt,linecolor=\clr,linestyle=dashed](\featurex,12.5)(\featurex,17.5)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\featurex,13)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\featurex,17)
	\rput(2.5,12){
		\psset{fillcolor=white}
		\psset{fillstyle=solid}
		\psset{linecolor=\clr}
		\psset{framearc=.5}
		\psframebox{\textcolor{\clr}{release/white2/I320/iteration\_2}}
	}
	% release/.../iteration_3
	\psset{fillcolor=\clr}
	\psline[linewidth=2pt,linecolor=\clr](\masterx,18)(\featurex,19)
	\psline[linewidth=2pt,linecolor=\clr](\featurex,19)(\featurex,23)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt]{->}(\featurex,23)(\masterx,24)
	\psline[linewidth=1pt,linecolor=\clr,linestyle=dashed](\featurex,18.5)(\featurex,23.5)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\featurex,19)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\featurex,23)
	\rput(2.5,18){
		\psset{fillcolor=white}
		\psset{fillstyle=solid}
		\psset{linecolor=\clr}
		\psset{framearc=.5}
		\psframebox{\textcolor{\clr}{release/white2/I320/iteration\_3}}
	}
	% fix/error_1
	\renewcommand{\clr}{Maroon}
	\newcommand{\fixx}{5}
	\psline[linewidth=2pt,linecolor=\clr](\featurex,3)(\fixx,4)
	\psline[linewidth=2pt,linecolor=\clr](\fixx,4)(\fixx,6)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt]{->}(\fixx,6)(\featurex,7)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt,linestyle=dashed]{->}(\fixx,6)(\masterx,7)
	\psline[linewidth=1pt,linecolor=\clr,linestyle=dashed](\fixx,3.5)(\fixx,6.5)
	\multido{\nA=4+2}{2}{
		\psset{fillcolor=\clr}
		\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,\nA)
	}
	\rput(5.5,3.3){
		\psset{fillcolor=white}
		\psset{fillstyle=solid}
		\psset{linecolor=\clr}
		\psset{framearc=.5}
		\psframebox{\textcolor{\clr}{fix/error\_1}}
	}
	% fix/error_2
	\psline[linewidth=2pt,linecolor=\clr](\featurex,7)(\fixx,8)
	\psline[linewidth=2pt,linecolor=\clr](\fixx,8)(\fixx,10)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt]{->}(\fixx,10)(\featurex,11)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt,linestyle=dashed]{->}(\fixx,10)(\masterx,11)
	\psline[linewidth=1pt,linecolor=\clr,linestyle=dashed](\fixx,7.5)(\fixx,10.5)
	\multido{\nA=8+2}{2}{
		\psset{fillcolor=\clr}
		\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,\nA)
	}
	\rput(5.5,7.3){
		\psset{fillcolor=white}
		\psset{fillstyle=solid}
		\psset{linecolor=\clr}
		\psset{framearc=.5}
		\psframebox{\textcolor{\clr}{fix/error\_2}}
	}
	% fix/error_3
	\psline[linewidth=2pt,linecolor=\clr](\featurex,13)(\fixx,14)
	\psline[linewidth=2pt,linecolor=\clr](\fixx,14)(\fixx,16)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt]{->}(\fixx,16)(\featurex,17)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt,linestyle=dashed]{->}(\fixx,16)(\masterx,17)
	\psline[linewidth=1pt,linecolor=\clr,linestyle=dashed](\fixx,13.5)(\fixx,16.5)
	\multido{\nA=14+2}{2}{
		\psset{fillcolor=\clr}
		\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,\nA)
	}
	\rput(5.5,13.3){
		\psset{fillcolor=white}
		\psset{fillstyle=solid}
		\psset{linecolor=\clr}
		\psset{framearc=.5}
		\psframebox{\textcolor{\clr}{fix/error\_3}}
	}
	% fix/error_4
	\psline[linewidth=2pt,linecolor=\clr](\featurex,19)(\fixx,20)
	\psline[linewidth=2pt,linecolor=\clr](\fixx,20)(\fixx,22)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt]{->}(\fixx,22)(\featurex,23)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt,linestyle=dashed]{->}(\fixx,22)(\masterx,23)
	\psline[linewidth=1pt,linecolor=\clr,linestyle=dashed](\fixx,19.5)(\fixx,22.5)
	\multido{\nA=20+2}{2}{
		\psset{fillcolor=\clr}
		\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,\nA)
	}
	\rput(5.5,19.3){
		\psset{fillcolor=white}
		\psset{fillstyle=solid}
		\psset{linecolor=\clr}
		\psset{framearc=.5}
		\psframebox{\textcolor{\clr}{fix/error\_4}}
	}
	% feature/f_1
	\renewcommand{\clr}{RoyalBlue}
	\renewcommand{\fixx}{11}
	\psline[linewidth=2pt,linecolor=\clr](\masterx,2)(\fixx,3)
	\psline[linewidth=2pt,linecolor=\clr](\fixx,3)(\fixx,5)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt]{->}(\fixx,5)(\masterx,6)
	\psline[linewidth=1pt,linecolor=\clr,linestyle=dashed](\fixx,2.5)(\fixx,5.5)
	\rput(11.5,2){
		\psset{fillcolor=white}
		\psset{fillstyle=solid}
		\psset{linecolor=\clr}
		\psset{framearc=.5}
		\psframebox{\textcolor{\clr}{feature/f\_1}}
	}
	\psset{fillcolor=\clr}
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,3)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,5)
	% feature/f_2
	\renewcommand{\fixx}{9}
	\psline[linewidth=2pt,linecolor=\clr](\masterx,2)(\fixx,3)
	\psline[linewidth=2pt,linecolor=\clr](\fixx,3)(\fixx,7)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt]{->}(\fixx,7)(\masterx,8)
	\psline[linewidth=1pt,linecolor=\clr,linestyle=dashed](\fixx,2.5)(\fixx,7.5)
	\rput(\fixx,2){
		\psset{fillcolor=white}
		\psset{fillstyle=solid}
		\psset{linecolor=\clr}
		\psset{framearc=.5}
		\psframebox{\textcolor{\clr}{feature/f\_2}}
	}
	\psset{fillcolor=\clr}
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,3)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,5)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,7)
	% feature/f_3
	\renewcommand{\fixx}{11}
	\psline[linewidth=2pt,linecolor=\clr](\masterx,7)(\fixx,8)
	\psline[linewidth=2pt,linecolor=\clr](\fixx,8)(\fixx,12)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt]{->}(\fixx,12)(\masterx,13)
	\psline[linewidth=1pt,linecolor=\clr,linestyle=dashed](\fixx,7.5)(\fixx,12.5)
	\rput(\fixx,7){
		\psset{fillcolor=white}
		\psset{fillstyle=solid}
		\psset{linecolor=\clr}
		\psset{framearc=.5}
		\psframebox{\textcolor{\clr}{feature/f\_3}}
	}
	\psset{fillcolor=\clr}
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,8)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,10)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,12)
	% feature/f_4
	\renewcommand{\fixx}{9}
	\psline[linewidth=2pt,linecolor=\clr](\masterx,11)(\fixx,12)
	\psline[linewidth=2pt,linecolor=\clr](\fixx,12)(\fixx,14)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt]{->}(\fixx,14)(\masterx,15)
	\psline[linewidth=1pt,linecolor=\clr,linestyle=dashed](\fixx,11.5)(\fixx,14.5)
	\rput(\fixx,11){
		\psset{fillcolor=white}
		\psset{fillstyle=solid}
		\psset{linecolor=\clr}
		\psset{framearc=.5}
		\psframebox{\textcolor{\clr}{feature/f\_4}}
	}
	\psset{fillcolor=\clr}
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,12)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,14)
	% dev_fix/error_5
	\renewcommand{\clr}{Magenta}
	\renewcommand{\fixx}{11}
	\psline[linewidth=2pt,linecolor=\clr](\masterx,12)(\fixx,13)
	\psline[linewidth=2pt,linecolor=\clr](\fixx,13)(\fixx,15)
	\psline[linewidth=2pt,linecolor=\clr,arrowsize=15pt]{->}(\fixx,15)(\masterx,16)
	\psline[linewidth=1pt,linecolor=\clr,linestyle=dashed](\fixx,12.5)(\fixx,15.5)
	\rput(11.5,12.5){
		\psset{fillcolor=white}
		\psset{fillstyle=solid}
		\psset{linecolor=\clr}
		\psset{framearc=.5}
		\psframebox{\textcolor{\clr}{fix/error\_5}}
	}
	\psset{fillcolor=\clr}
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,13)
	\psdot[dotsize=10pt,dotstyle=o,linecolor=\clr](\fixx,15)
	% external release
	\renewcommand{\clr}{RedOrange}
	\psset{fillcolor=\clr}
	\psdot[dotsize=5pt,dotstyle=o,linecolor=\clr](3,23)
	\rput(3,24){
		\psset{fillcolor=white}
		\psset{fillstyle=solid}
		\psset{linecolor=\clr}
		\psset{framearc=.5}
		\psframebox{\textcolor{\clr}{customer release}}
	}
	\psset{linecolor=white}
	\rput(10.5,25){
		\psframebox{\textcolor{ForestGreen}{Release Canditates}}
	}
	\rput(10.5,24.5){
		\psframebox{\textcolor{RedOrange}{Customer release}}
	}
	\rput(10.5,24){
		\psframebox{\textcolor{Maroon}{Error dedected by system test}}
	}
	\rput(10.5,23.5){
		\psframebox{\textcolor{Magenta}{Error detected while development}}
	}
	\rput(10.5,23){
		\psframebox{\textcolor{RoyalBlue}{Feature implementation}}
	}
\end{pspicture}