1 03/31/83  string
 2 
 3 Syntax:  string {STRs}
 4 
 5 
 6 Syntax as active function:  [string {STRs}]
 7 
 8 
 9 Function:  returns a single character string formed by concatenating
10 all of the strings together, separated by single spaces.  If no strings
11 are specified, a null character string is returned.  If one or more
12 strings are specified, any quotes in these are returned as single
13 quotes.