Original sentence: ASCII is embedded in its apparent replacement, Unicode, as the lowest 128 characters.Although these encodings are sometimes referred to as ASCII, true ASCII is strictly defined only by ANSI standard.Other international standards bodies have ratified character encodings that are identical or nearly identical to ASCII, with extensions for characters outside the English alphabet and symbols used outside the Unites States, such as the symbol for the United Kingdom's pound sterling (£)
Edited sentence: ASCII has also become embedded in its probable replacement, Unicode, as the lowest 128 characters.In terms of mere adoption, ASCII is one of the most successful software standards ever.Other international standards bodies have ratified character encodings that are identical or nearly identical to ASCII, because some languages use letters outside the 26-character A-Z alphabet, and the United Kingdom wanted the £-sign.These encodings are sometimes referred to as ASCII, even though ASCII is strictly defined only by the ASA/ANSI standards