Diccionario panhispa nico de dudas

the long version

The Panhispanic Dictionary of Doubts guides users throughout the proper use of the Spanish language. It provides recommendations presented with examples that have been extracted from real texts originating from the databases of the Real Academia Española. It is a work conceived from all the Hispanic countries, which maintains a fundamental balance between the variety of a languages spoken in so many different regions, and the linguistic unity that must be preserved. In short, it gives clear answers to the doubts of those who worry about speaking and writing Spanish correctly. - from www.powells.com.