Highlight columns from C to F, and try Format/ Column/ Unhide.
If that doesn't work, try Format/ Column/ Width, and set to an appropriate
value. (Default may be 8.43).
--
David Biddulph

Carebeatle wrote:
Please help! I wanted to look at column "C" and column "F" right
next to each other, so I dragged the edge of column "F" over to the
edge of column "C". But now I can't seem to undo this drag so I can
see columns "D" and "E" again. When I search for "D1" or "E1" via
the go to command, a tiny part of the border between "C" and "F" is
highlighted, so it doesn't seem like those two columns have been
deleted. Does anyone know how to uncover those two columns? Thank
you so much!