This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.1)
Messages
Mathematica uses its symbolic architecture to provide a convenient modular framework for generating and managing messages, both in programs and interactive sessions.
Quiet evaluate an expression "quietly", outputting no messages
Off globally switch off a message
On switch on a message or a group of messages (some messages are off by default)
"Symbolics","Graphics","Compiler",... named groups of messages
Assert give an assertion to be checked when code is executed
    
MessageName (::) — the symbolic name for a message, assigned with
Message output a named message, filling in specified elements
Check check whether a message has been generated
    
Messages in Notebooks
MessageDialog put up a message dialog
Beep  ▪ Speak  ▪ EmitSound
    
$MessagePrePrint a function to apply to message arguments before printing
    
$Language the default global language for messages
$MessageGroups resettable lists of messages, mostly off by default
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