Help System (web edition)

COUNT L1,L2,K
writes numbers 1,2,3,... on lines L1-L2 in format indicated by an image
line K of the form "   123.1  ".

COUNT L1,L2,K,C
works similarly, but writes numbers C,C+1,C+2,...

COUNT L1,L2,K,C,D
works similarly, but writes numbers C,C+D,C+2D,...

COUNT L1,L2,K,C,D,E
with E>0 writes numbers C,C+D,...,C+(E-1)D,C,C+D,...,C+(E-1)D,...,
with E<0 writes numbers C,C,...,C,C+D,C+D,...,C+D,C+2D,C+2D,...,C+2D,...
                   where each of values C,C+D,C+2D is repeated -E times.