Lexical - F$ENVIRONMENT

A useful example:

$ DFLT = F$ENVIRONMENT( “DEFAULT” )

$ MSG = F$ENVIRONMENT( “MESSAGE” )

$ SET DEFAULT ddcu:[dir]

$ SET MESSAGE/NOFACI/NOSEVE/NOIDE/NOTEXT

$ statement(s)

$ SET MESSAGE’MSG’

$ SET DEFAULT &DFLT

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This example illustrates one method of suppressing messages selectively. The technique shown is to use the F$ENVIRONMENT lexical to save the MESSAGE display state, change it to what is wanted, then change it back to the original state.