TextExpander offers a number of predefined snippet groups that you can add to your snippet library.
Choose File > Add Predefined Group... and then choose the group you want to add.
Accented Words
Words used in English of non-English origin that are spelled with diacritical marks, aka accents. If you type the word without accent marks, TextExpander will replace them with the proper spelling.
Example: creme brulee => crème brûlée.
In cases where the word is ambiguous, you must add an apostrophe to the end.
AutoCorrect Snippets
100 common misspelling in English that TextExpander can correct for you.
Example: recieve => receive.
CSS Snippets
Basic CSS mark-up for styling web pages. The abbreviations use the semi-colon as a leading character.
Example: ;h1 => h1 { } (properly formatted, with the cursor repositioned between the brackets)
HTML Snippets
Basic HTML mark-up for web pages. The abbreviations use the comma as a leading character for HTML tags, and the period as the leading character for special character codes.
Example: ,h1 => <h1></h1>(with the cursor repositioned between the tags)
Example: .euro => €
Internet Productivity Snippets
AppleScript snippets that can convert a URL copied to the clipboard into a shortened URL from bit.ly, TinyURL, is.gd. Can also validate URLs.
Symbol Snippets
Easy way to insert some common symbols.
Example: eeuro => €
TidBITS AutoCorrect Dictionary
This exhaustive list of 2400+ misspellings comes courtesy of TidBITS, the newsletter and Web site for Mac users. For TextExpander users who want industrial-strength error correcting.