Class Summary Class Description FileEndReachedUserMessageMessage used to notify that file end is reached and no other callbacks will be made. FileNotSupportedUserMessageShould be sent is file format can not be opened by this reader IndicatorDefinitionUserMessage Deprecated. IndicatorPointUserMessage Deprecated. OrderQueuePositionUserMessage Deprecated. ReadFileLoginDataRequest to start reading specific file TextDataMessageRecord arbitrary text information that can later be viewed via bookmap.