It has been highly successful in seamlessly aligning its legal, policy and planning documents to build the gender perspective into all government action. Implementation has not been effective, how'ever. Although line ministries do in practice commit to implementing PROIGUALDAD, they fail to conduct solid gender analyses as part of the policy cycle. There is currently no systematic requirement to include gender analysis in the design and development of new policies, budgets or laws, or as part of regulatory impact assessments. Without a clear governmental mandate, gender impact assessments will remain the exception, rather than the rule. The manual contains the most tried and tested measures in the cross-cutting application of gender mainstreaming.