In 1999 with the onset of digital television, TnaG was rebranded as TG4 to strengthen the perception of the brand, from being niche Irish-language-only channel to mainstream channel with Irish-language programmes. The TG4 ident continued with the difference aspect of the channel, that provides an alternative view, the slogan "Súil Eile" translates literally as "another eye" but is also a pun in Irish meaning "a different view". The logo takes the G from the original logo, separates it from the T and the T loses its Celtic script look. The promotion of the channel from TnaG to TG4 was done with the use of a caterpillar growing into a butterfly.