Translations:Help:Extension:Translate/Group configuration/2/en

Message groups are the high level blocks that translators interact with: to choose a message to work on they first need to select a group, unless they are using translation search. For each group we can gather statistics and each group has a unique identifier. Naturally, messages are the smallest blocks of text that translators translate one at a time. Each message also has an identifier, which is usually called a key. The key doesn't need to be unique across message groups.