9 for Y in `seq 0 $(SEQ)`; do \
10 convert images/matita.png -crop \
11 $(SIZE_X)x$(SIZE_Y)+$(MARGIN_X)+`expr $(MARGIN_Y) + $$Y '*' '(' $(SIZE_Y) + 1 ')'` tmp.png; \
12 composite -compose src-over images/bg.png tmp.png images/bg$$Y.png;\
17 for X in `seq 0 $(SEQ)`; do\