You can use the Fill command in the Editing Group on the Home ribbon bar to fill information across worksheets when they are grouped. For example, if you add a few worksheets to your workbook and you can to copy parts of one worksheet to another, you could use copy and paste, however, this could take several operations to perform. By grouping the worksheets and using the fill command, you could quickly copy parts of the original worksheet to the new worksheets inserted into the workbook.
In 1986, mimeograph machines were (for the most part) replaced by digital copiers in elementary schools. Those of us teachers who experienced using mimeograph machines will forever remember the distinct smell of the still_damp, purple_ink worksheets that we handed out to our students _ by the ream full. (If you're like me, you can remember that smell right now!)