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?SetVar1 `< ?SetVar2
Set inclusion constraint (obsolete)
- A set variable.
- A variable.
Constrain sets SetVar1 and SetVar2 so that SetVar2 contains SetVar1.
Obsolete: (`<)/2 is available only for compatibility with conjunto library syntax.
It is equivalent (with swapped arguments) to the preferred `>=/2.
See its description for details.
`>= / 2, `= / 2