Another trick that may be helpful is using the foreign Paren 5!:6 or the Global Parameters:Default Displays 9!:3]6 to see the parsing a little better. Both approaches add parentheses to tacit expressions to clarify better the syntax.
9!:3]6 (+/ % #) (+/) % # test =: (+/ % #) 5!:6 <'test' (+/) % # (B=) ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
