• method Attach(pDevice As %String = $IO, Output pSC As %Status) returns nothing.

Attach to the named open Device or to the current Device by default

• classmethod AttachNew(pDevice As %String = $IO, Output pSC As %Status) returns %IO.DeviceStream

Attach the current $IO device to an instance of this class

• method CharEncodingSet(pCharEncoding As %String) returns %Status

• method Close(Output pSC As %Status) returns %Boolean

• method Flush(Output pSC As %Status) returns nothing.

• method Read(ByRef pLen As %Integer = ..#MAXLOCALSTRING, ByRef pTimeout As %Numeric = -1, Output pSC As %Status) returns %String

Read until pMaxReadLen chars are gotten or pTimeout expires On return, if pTimeout=0 it means no timeout occurred. If pTimeout=0 and the returned string is shorter than pMaxReadLen, then AtEnd will be 1.

• method ReadLine(pMaxReadLen As %Integer = ..#MAXLOCALSTRING, ByRef pTimeout As %Numeric = -1, Output pSC As %Status, ByRef pLineTerminator As %String = ..LineTerminator) returns %String

Read until pMaxReadLen chars are gotten, pTimeout expires, or a LineTerminator character is found. On return, if pTimeout=0 it means no timeout occurred. If pTimeout=0 and the returned string contains the full pMaxReadLen characters, it means no LineTerminator was encountered yet, even if the following character would be a LineTerminator. If pTimeout=0 and the returned string is shorter than pMaxReadLen, then either a LineTerminator or the End Of Stream (AtEnd = 1) was encountered. If pLineTerminator is defined, then the line is read until one of the given characters is encountered. On return, pLineTerminator contains the encountered character(s) if any.

• method TranslationTableSet(pTable As %String) returns %Status

• method Write(pData As %String = "", pFlush As %Boolean = ..#DEFAULTFLUSHONWRITE, Output pSC As %Status) returns nothing.