Grass Valley Maestro Master Control Installation v.2.4.0 - Manual (Page 157)

MAESTRO Installation and Service Manual 157
2nd Step: Definition
Up to four user defined text crawl sources can be used, once they have been
specified in the GPIO Table, using the EAS Messaging User# 1, 2, 3, or 4
Sub-System. Defining text crawl sources provides access to additional text
crawl templates besides the Warning, Watch or Test text crawl templates.
When the GPIO table is modified, it must be validated with the Event Code
Table. The same EAS Messaging User # 1, 2, 3, or 4 can be specified for mul-
tiple event codes.