printf("\tpad = entity, ':', pad number ;\n");
printf("\tentity = entity number | ( '\"', entity name, '\"' ) ;\n");
printf("\tsize = width, 'x', height ;\n");
- printf("\tcrop = left, ',', top, '/', size ;\n");
+ printf("\tcrop = '(', left, ',', top, ')', '/', size ;\n");
printf("\tframe interval = numerator, '/', denominator ;\n");
printf("where the fields are\n");
printf("\tentity number Entity numeric identifier\n");