,SIMPLE ,FRAC;N 7,SPATIAL
      ,>RANGE;T7 ,EXAMPLES

#1_4 ,"O-HALF IS WRITT5

     #1
    ?33#
     #2

#2_4 ;X OV] ;Y IS WRITT5

     ;X
    ?33#
     ;Y

#3_4 ,OP5 FRAC;N ;X PLUS ;Y OV]
;X M9US ;Y CLOSE FRAC;N IS
WRITT5

     X+Y
    ?333#
     X-Y


                              #A
#4_4 ,OP5 FRAC;N ;X PLUS TWO OV]
;X SQU>$ M9US F\R CLOSE FRAC;N
IS WRITT5

      X+2
    ?333333#
     X^2"-4

#5_4 ,OP5 FRAC;N ;Y SUB TWO M9US
;Y SUB "O OV] ;X SUB TWO M9US ;X
SUB "O CLOSE FRAC;N IS WRITT5

     Y2-Y1
    ?33333#
     X2-X1









                              #B
#6_4 ,OP5 FRAC;N ;X PLUS ;Y OV]
OP5 P>5!SIS ;X PLUS ;Y CLOSE
P>5!SIS OP5 P>5!SIS ;Y PLUS ;Z
CLOSE P>5!SIS CLOSE FRAC;N
EQUALS OP5 FRAC;N "O OV] ;Y PLUS
;Z IS WRITT5

        X+Y          #1
    ?3333333333# .K ?333#
     (X+Y)(Y+Z)      Y+Z














                              #C