These are operations whose result is a boolean value (0 or 1). Here is the list:

- Egal (or =): tests if two objects are equal. Those objects can be a list or the Nil value.
- Negal (ou <> ): tests if two objects are not equal.Those objects can be a list or the Nil value.
- Inf (or <): Tests the "strictly less than" relation (between two reals).
- InfOuE (or <=): tests the "less than or equal to" relation.
- Sup (or > ): tests the "strictly greater than".
- SupOuE (or >=): tests the "greater than or equal to" relation.
- Inside: tests if the first argument (that must be an point’s affix) is inside (edge excluded) the polygon given by the second argument (that must be a closed list).
- Exemple(s): 1 Inside [-1,2+3*i,4-i,-1] give 1 and i Inside [-1,2+3*i,4-i,-1] give 0.