>Hi,
>
>I have a spreadsheet where a column has multi-line entries. Example:
>
>COLOR
>-----------
>Blue
>Red
>White
>
>Red
>Green
>
>and so on.
>
>When I open this spreadsheet, I only see the first string of the multi-line entry, in this column. If I double-click into the cell, the line expands vertically, showing all strings in this this cell.
>
>Is there a one-key entry to "open/expand" all cell of this column (instead of double-click in each cell)? Or, even better, to open/expand other columns that have a similar multi-line entry?

A quick Google search found https://support.office.com/en-us/article/wrap-text-in-a-cell-2a18cff5-ccc1-4bce-95e4-f0d4f3ff4e84

the section, "Adjust the row height to make all wrapped text visible".