59.Any restrictions on children’s right to freedom of expression in the digital environment, such as filters, including safety measures, should be lawful, necessary and proportionate. The rationale for such restrictions should be transparent and communicated to children in age-appropriate language. States parties should provide children with information and training opportunities on how to effectively exercise that right, in particular how to create and share digital content safely, while respecting the rights and dignity of others and not violating legislation, such as that relating to incitement to hatred and violence.