API EditBox HighlightText

Selects text in an EditBox. EditBox:HighlightText([start, [end]])

• start : Number - the position at which to start the highlight; defaults to 0 if not specified.
• end : Number - the position at which to stop the highlight; defaults to the end of the string if not specified. Indices use standard Lua semantics, so -1 is the end of the string.

• The position before the first character is 0.
• Leaving out both parameters, as in EditBox:HighlightText, will highlight the entire EditBox content.