Determines how transparency should be indicated. Valid values are CHECK_PATTERN, COLOR and NONE. If COLOR is chosen, then the trans-color key determines the color value used.
Suidhichidh seo mar a thèid trìd-shoillearachd a thaisbeanadh. Is CHECK_PATTERN, COLOR is NONE na luachan dligheach. Ma thaghas tu COLOR, bidh luach an datha a-rèir na h-iuchrach trans-color.