MS Excel
How can you show or hide the gridlines in Excel Worksheet

Click Gridline tool on Forms toolbar
Go to Tools > Options > View tab and mark or remove the check box named Gridline
Both
None

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MS Excel
How do you delete a column?

Select the column heading you want to delete and select the Delete Row button on the standard toolbar
Right click the column heading you want to delete and select delete from the shortcut menu
Select the row heading you want to delete and select Edit>Delete from the menu
Select the column heading you want to delete and select Insert Delete from the menu

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