REPLACEB

Returns text where an old text is replaced with a new text, using byte positions.

REPLACEB( Text ; Position ; Length ; NewText )

Text: A text expression or reference to a cell containing a text expression in which the characters are to be replaced.

Position: the character position from which text is to be replaced.

Length: the number of characters to be replaced.

NewText: the text to be inserted.

=REPLACEB("ᄩᄔᄕᄜᄝᄞᄠᄢᄣᄫᄬᄭᄮᄯᄲᄶ";4;1;"ab") returns "ᄩ abᄕᄜᄝᄞᄠᄢᄣᄫᄬᄭᄮᄯᄲᄶ" .