Section 7: Simple Programming121
Flowchart   Instructions
Key in
radius
Start
Square radius
Summon pi
Multiply
Stop
 
g  LBL ALPHA CIRCLE ALPHA 
g  X2 
g    
 ×  
END 
You can see the similarities between the program and the flowchart. At times, a flowchart may duplicate the set of instructions exactly, as shown above. At other times, it may be more useful to have an entire group of instructions represented by a single block in the flowchart. For example, here is another flowchart for the CIRCLE program:
Start
Calculate πr2
Stop
Here an entire group of instructions was replaced by one block in the flowchart. This is a