macrovar - variables of function
Returns in a list the set of variables used by a function. vars is a list made of five column vectors of character strings
in : input variables (vars(1))
out : output variables (vars(2))
globals : global variables (vars(3))
called : names of functions called (vars(4))
locals : local variables (vars(5))
deff('y=f(x1,x2)','loc=1;y=a*x1+x2-loc') vars=macrovar(f)