My updated my dot-dot code is in CVS (/contrib/integer_sequence); demo: (%i13) 0 .. 2 .. 11; (%o13) [0,2,4,6,8,10] (%i14) 0 .. 11; (%o14) [0,1,2,3,4,5,6,7,8,9,10,11] (%i15) 0 .. 0.1 .. 1; (%o15) [0.0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.0] Barton