SCALARS

-->a=1               //real constant
 a  =
    1.
-->1==1              //boolean
 ans  =
  T
-->'string'          //character string
 ans  =
 string
-->z=poly(0,'z')     // polynomial with variable 'z' and with one root at zero
 z  =
    z
-->p=1+3*z+4.5*z^2   //polynomial
 p  =
                 2
    1 + 3z + 4.5z
-->r=z/p             //rational
 r  =
          z
    -------------
                 2
    1 + 3z + 4.5z