AT&T Brand Guidelines at a Glance 5 x 1x 1x 1x 1x x 1x 1x 1x 1x x 1x 1x 1x 1x x 1x 1x 1x 1x x 1x 1x 1x 1x The signature with tagline and “The new” clear space Signature clear space Clear Space By leaving ample space around the signature, we make sure that it stands out. Clear space is measured by the x-height of the logotype, shown as “x” in this exhibit. The minimum clear space must always be 1x on all sides of the signature. When possible, increase this amount for even more visibility. The same clear space rules apply to all configurations and variations of the signature.