(Quick Reference)
                create-i18n
Purpose
The 
create-i18n generates all the i18n messages for every domain class.
Examples
grails create-i18n Person
grails create-i18n "*"
Description
Given at least one domain class, this command creates i18n messages for every domain class. The command will append every new message in the 
grails-app/i18n/messages.properties file.
Usage:
grails create-i18n [domainClass]
Arguments:
domainClass - Either a domain class name (case-sensitive) without its package or a wildcard (*). If you specify the wildcard the artifacts will be generated for all domain classes.