MS Excel
To hold row and column titles in place so that they do not scroll when you scroll a worksheet click the

Unfreeze panes command on the window menu
Split command on the window menu
Hold titles command on the edit menu
Freeze panes command on the window menu

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MS Excel
You can edit a cell by

Selecting Edit > Edit cell from the menu
Double clicking the cell to edit it in place
None of these
Clicking the formula button

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