The 'extended' argument to 'strsplit' has been removed, but it is still mentioned in the argument items in the help file for 'fixed' and 'perl'. -- Patrick Burns pburns at pburns.seanet.com twitter: @portfolioprobe http://www.portfolioprobe.com/blog http://www.burns-stat.com (home of 'Some hints for the R beginner' and 'The R Inferno')