Well, the first one has multiple identical squares, so it seems to me intuitive that it means 'copy'. For exclusion (and resemblance to the folder+sheet on, e.g

Well, the first one has multiple identical squares, so it seems to me intuitive that it means 'copy'. For exclusion (and resemblance to the folder+sheet on, e.g. MS Office) the last one has to be 'paste'. Oh, I never used ICS, so it's not because I tried them.