You can use this page to test the Theme’s handling of the gallery shortcode, including the columns parameter, from 1 to 9 columns. Themes are only required to support the default setting (3 columns), so this page is entirely optional.
One Column
Sorry, photo gallery is empty.
Two Columns
Sorry, photo gallery is empty.
Three Columns
Sorry, photo gallery is empty.
Four Columns
Sorry, photo gallery is empty.
Five Columns
Sorry, photo gallery is empty.
Six Columns
Sorry, photo gallery is empty.
Seven Columns
Sorry, photo gallery is empty.
Eight Columns
Sorry, photo gallery is empty.
Nine Columns
Sorry, photo gallery is empty.