Name. The group’s name, TXT, is an acronym standing for "Tomorrow X Together". In Korean, the group name is "투모로우바이투게더 (RR: Tumoroubaitugedeo)", or the words "Tomorrow By Together" transliterated into Hangul.
TXT files are useful for storing information in plain text with no special formatting beyond basic fonts and font styles. The file is commonly used for recording notes, directions, and other similar documents that do not need to appear a certain way.