5.5 Operators and syntax

There are two ways to write certain commands. For example, to add 4 and 7, there are two possibilities: you can either use the primitive sum which expects two arguments: sum 4 7, or you can use the operator +: 4+7. Both have the same effect.
This table shows the relationship between operators and primitives:

There are two other operators with no associated primitive:

• Operator “Less than or equal to”: <=
• Opérator “Greater than or equal to”: >=

Note: The two operators | and & are specific to XLOGO. They do not exist in traditional versions of LOGO. Here are some examples of usage: