diff --git a/Makefile b/Makefile
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+++ b/Makefile
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+# Anzahl an gleichzeitigen Prozessen
+MAKEFLAGS+="-j 4"
+#
+# Alle Dateien die mit 'agr' enden
+SRCS=$(wildcard *.agr)
+
+# Verzeichnisse fuer PNG und EPS Dateien
+TDIR=Figures
+
+# Generiere Zieldateinamen
+PNG200=$(patsubst %.agr,$(TDIR)/%_200.png,$(SRCS))
+PNG600=$(patsubst %.agr,$(TDIR)/%_600.png,$(SRCS))
+PNG2400=$(patsubst %.agr,$(TDIR)/%_2400.png,$(SRCS))
+EPS=$(patsubst %.agr,$(TDIR)/%.eps,$(SRCS))
+PDF=$(patsubst %.agr,$(TDIR)/%.pdf,$(SRCS))
+PDFOPT=$(patsubst %.agr,$(TDIR)/%_opt.pdf,$(SRCS))
+PS=$(patsubst %.agr,$(TDIR)/%.ps,$(SRCS))
+
+# Optionen
+OPAQUE=-pexec 'DEVICE "PNG" OP "transparent:off,compression:9"' 
+#-pexec 'DEVICE "PNG" PAGE SIZE 800, 600'
+
+
+DPI200=-pexec 'DEVICE "PNG" DPI 200'
+DPI600=-pexec 'DEVICE "PNG" DPI 600'
+DPI2400=-pexec 'DEVICE "PNG" DPI 2400'
+
+# add pngXXX to make png in XXX resolution, available are 200, 600 and 2400 DPI
+# prepare is always needed!
+all: prepare pdf
+	@echo Creating figures in "Figures" folder.
+	@echo Use "make" to update figures from updated agr files.
+	@echo Use "make -B" to force regeneration of all figures.
+
+
+clean:
+	@echo Delete files in the "Figures" folder yourself, I won't do it!
+
+eps: $(EPS)
+ps: $(PS)
+png200: $(PNG200) $(TPNG200)
+png600: $(PNG600) $(TPNG600)
+png2400: $(PNG2400) $(TPNG2400)
+pdf: $(PDF)
+pdfopt: $(PDFOPT)
+
+# Verzeichnis erstellen
+prepare: $(TDIR)
+$(TDIR):
+	mkdir -p $@
+
+$(TDIR)/%.ps : %.agr 
+	LC_NUMERIC=C xmgrace -hardcopy -printfile $@ $<
+
+$(TDIR)/%.eps : %.agr 
+	LC_NUMERIC=C xmgrace -hardcopy -hdevice EPS -printfile $@ $<
+
+$(TDIR)/%_600.png : %.agr
+	LC_NUMERIC=C xmgrace $(OPAQUE) $(DPI600) -hdevice PNG -hardcopy -printfile $@  $<
+$(TDIR)/%_200.png : %.agr
+	LC_NUMERIC=C xmgrace $(OPAQUE) $(DPI200) -hdevice PNG -hardcopy -printfile $@  $<
+$(TDIR)/%_2400.png : %.agr
+	LC_NUMERIC=C xmgrace $(OPAQUE) $(DPI2400) -hdevice PNG -hardcopy -printfile $@  $<
+
+$(TDIR)/%.pdf : $(TDIR)/%.ps
+	epstopdf $< $@
+
+# the following are not doing anything useful, used as an example only
+$(TDIR)/%_opt.pdf : $(TDIR)/%.pdf
+	gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.7 -dPDFSETTINGS=/prepress -dNOPAUSE -dQUIET -dBATCH -sOutputFile=$@ $<
+#	epspdf $<
+#	epspdf -b $@ $<
+#	inkscape $@ --export-filename $<
+
+#$(TDIR)/%.pdf : $(TDIR)/%.ps
+#	#ps2pdf -dEPSCrop $< $@
+