Catechism of the Catholic Church, online version

Catechism of the Catholic Church second editionis available online.

• Glossary of terms

• Analytical index

• Index of citations from sources that include sacred scripture, professions of faith, ecumenical councils, particular councils and synods, pontifical documents, ecclesiastical documents, canon law, liturgy and ecclesiastical writers

• Abbreviations of biblical and church documents

• Marginal cross-references with italicized numbers referring to other paragraphs that deal with the same theme

• In Brief texts following each thematic unit that sum up the essentials of that unit's teaching, among other features