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# ?SetVar1 `< ?SetVar2

Set inclusion constraint (obsolete)

SetVar1
  A set variable.
SetVar2
  A variable.

## Description

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.

## See Also

`>= / 2, `= / 2