Answer:
.xlxs
but it supports pretty much any spreadsheet format.
Use your right clicker and it should pop up as delete slide
Try clicking the down arrow on the search bar or right clicking it and selecting an option no if that doesn’t work then drag the || to somewhere or right click it. If none of those work you can right click the taskbar and see if there is anything that looks like it could be the search bear and uncheck it
