Table
By default, each column has been preconfigured to have an optimal width depending on the header and content. You can also change the column width to, for instance, show more columns on your screen.
Position the mouse cursor on the line that divides 2 column headers. When the cursor transforms into the resize cursor, click the left mouse button and hold it down. Drag the cursor to the left or right and release the mouse button to set the new width.