Reference: txtReplaceAll
txtReplaceAll(S, x, y) replaces all occurrences of x by y in the text (string) S. When locating x in S, no distinction is made between capital and small letters.
txtReplaceAll(S, x, y) replaces all occurrences of x by y in the text (string) S. When locating x in S, no distinction is made between capital and small letters.