The greyscale feature means you can constuct a costume from a single list of pixels - this is asimple example but I'm sure its going to be more useful for something than just this
Yeah, some users have been clamoring for = to be case sensitive, which will happen over my dead body, so we did this to make everyone happy.
(Well, now everyone will want things like the contains block to let you choose what kind of comparison to do. Maybe someday we'll have a relabel option to turn contains into case sensitive contains or something.)
Sure you are. If you have a table, a matrix, a spreadsheet -- anything two-dimensional -- you can exchange rows and columns, from
1 2 3
4 5 6
to
1 4
2 5
3 6
This is useful because we represent 2D data structures as lists of lists, where each sublist is a row. So it's easier to manipulate rows than columns. So if you want columns, you work with the transpose of your data.