Hi, some random-but-inspired-by-real-work thoughts about gretl's lists: -- The fact that you can use index ranges with lists doesn't seem to be documented, or is it? For example, a little bit to my amazement, this works: <hansl> open denmark list L = LRM LRY IBO ols L[1] const L[2 : nelem(L)] </hansl> (And in the future I guess even with "end" in place of "nelem(L)".) Maybe it should be mentioned in the list chapter. -- What isn't possible yet is to operate on all list elements at once, without using an explicit loop. What I mean is, wouldn't it be nice if one could do something like: list L2 = L .- x    # not possible to do the equivalent of the following loop code: <hansl> list L2 = null loop foreach i L   L2 += $i - x endloop </hansl> (I guess there's an overlap with the feature request to have a new apply() function for generic elementwise operation. But I think using the dot-operators would feel very natural.) Just some ideas - thanks sven