,M9US ,EXAMPLES #A4 ,SIX M9US FIVE IS WRITT5 _% #6-5 _: #B4 ,TW5TY M9US F\RTE5 EQUALS SIX IS WRITT5 _% #20-14 .K #6 _: #C4 ,EI$ M9US A SQU>$ EQUALS ;B SQU>$ IS WRITT5 _% C^2"-A^2 .K B^2 _: #H4 ,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/X2-X1# _: #I4 A SUB ;N EQUALS A SUB "O PLUS OP5 P>5!SIS ;N M9US "O CLOSE P>5!SIS ;D IS WRITT5 _% A;N .K A1+(N-1)D _: #B