EnforceStongPassword set to False

I know from documentation, that if EnforceStrongPassword is set to true the following is necessary:

You can require that users use strong passwords when registering by enabling the EnforceStrongPassword setting in the LTR_TNEW_SITE_CONTROLS table. By default, a strong password must contain at least one number, one capital letter, one special character, and be at least 6 characters long.

If EnforceStrongPassword is set to False, what are the requirements?

Thanks,

Jessica