String history
Each string in a software application has a unique string ID.
Rigi records the history of changes in each string using the string ID. This enables translators and project managers to check how a string was translated or edited in the past.
String history is displayed:
in the Rigi editor. For details, see the Translate using the Rigi online editor guide.
in the Context > Texts section. For details, see the Strings in context section.