IRS textWriter is designed to format short amounts of text to help emerging readers - whether or not to blend letters together etc. You can find out more here.
textWriter uses syntax highlighting techniques usually found in text editors to help emerging readers by highlighting when to blend letters together.
letters allows you to make and change words using letters from the alphabet, consonant clusters and digraphs. letters also includes symbols from the International Phonetic Alphabet (IPA) to allow you to construct words from their sounds or show a corrispondance between the letters from the alphabet and their sounds.