Learn how to draw a diagonal line through a cell in Excel. This is especially good to show as a divider between row and column headers.br br Here are the steps to draw the diagonal linebr 1) Select table corner cell.br 2) Ctrl + 1br 3) Border tabbr 4) Click on diagonal line.br 5) OKbr br Here are the steps to add text to the header cell.br 1) Select table corner cell.br 2) Add a few spaces and enter row header text; "Month".br 3) Alt + Enter to add new linebr 4) Enter column header text; "Name"br 5) Press Enter when done.br br Here are the steps to change font size of the header textbr 1) Double click "Month".br 2) Change font size to 8.br 3) Double click "Name".br 4) Change font size to 8.