@wcount Number of words in the string list.

@wcross String with words in first list crossed with second.

@wdelim Replace delimiters in string.

@wdir List of all files in a directory.

@wdrop Drop words from string list.

@weekday Day of the week of the observation.

@wexpand String representation of automatic dummy variables.

@wfattrnames String containing a list of attribute names in the workfile .

@wfattrvals String containing a list of attribute values in the workfile .

@wfind Find location of word (case-sensitive) in string list.

@wfname String containing name of current workfile.

@wfindnc Find location of word (not case-sensitive) in string list.

@wfpath String containing path of current workfile.

@winsert Insert string into string after word.

@winterleave Interleave words of two string lists.

@wintersect Intersection of words in two string lists.

@wjoin Extract elements of an Svector to a string.

@wkeep Keep subset of words in string list.

@wleft Left-most words of string list.

@wlookup String list formed from objects in a workfile or database matching a pattern.

@wmid Middle or middle to end words of a string list.

@wnotin Words not in a string list.

@word Single word from a string list.

@wordq Single word from a string list, preserving quotes.

@wquery String containing list of object attributes for objects matching a database query

@wread Read contents of text file into a string.

@wreplace Replace characters in each word in a string list.

@wrfind Find location of a word (case-sensitive) in a string list searching from end.

@wrfindnc Find location of a word (not case-sensitive) in a string list searching from end.

@wright Right-most words of a string list.

@wsort Sorted list of words in a string list.

@wsplit Create string vector from words in a string list.

@wunion Union of words in two string lists.

@wunique Remove duplicate words in string list.