The manual reads:
1000 PI = 3.14159265: P2 = PI 2
1010 SP = P2 9: REM
1020 EP = SP 5: REM
1030 DT = PI 15:REM
The arithmetic operands are missing.
The lines should read:
1000 PI = 3.14159265: P2 = PI * 2
1010 SP = P2/9: REM
1020 EP = SP/5: REM
1030 DT = PI/15: REM
Article Change History:
14 Nov 1996 - Reviewed for technical accuracy, revised formatting.