1 03/31/83  length, ln
 2 
 3 Syntax:  ln STR
 4 
 5 
 6 Syntax as active function:  [ln STR]
 7 
 8 
 9 Function:  returns an integer representing the number of characters in
10 STR.
11 
12 
13 Arguments:
14 STR
15    is any string of alphanumeric characters.  If STR contains blanks or
16    other command language characters, it must be enclosed in quotes.