(TXT) Makefile
 (TXT) ex0001.tex
 (TXT) ex0002.tex
 (TXT) ex0003.tex
 (TXT) ex0004.tex
 (TXT) ex0005.tex
 (TXT) ex0006.tex
 (TXT) ex0007.tex
 (TXT) ex0008.tex
 (TXT) ex0009.tex
 (TXT) ex0010.tex
 (TXT) ex0011.tex
 (TXT) ex0012.tex
 (TXT) ex0013.tex
 (TXT) ex0101.tex
 (TXT) ex0201.tex
 (TXT) ex0202.tex
 (TXT) ex0301.tex
 (TXT) xxx