[basex-talk] aligning sequences of text?

Hello! If I have two (fairly long) sequences of text, ('The', 'words', 'are', 'sequence', 'members') and I want all the index numbers of matching pairs despite the sequences only mostly matching (so a word, or several words, can be missing from sequence A or sequence B), is there an established algorithm for doing this? (If I search on "aligning sequences" I get bioinformatics about gene sequences; if I search on "aligning text" I get typography.) Thanks! Graydon