1world:
2	pdflatex presentation.tex
3	pdflatex presentation.tex
4	pdflatex ds.tex
5	bibtex ds
6	pdflatex ds.tex
7	pdflatex ds.tex
8
9clean:
10	rm -f *.ps *~ *.dvi *.aux *.log *.idx *.toc *.nav *.out *.snm *.flc *.vrb
11