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BUILT-IN MATHEMATICA SYMBOL
Message
Message[symbol::tag]
prints the message 
unless it has been switched off.
Message[symbol::tag, e1, e2, ...]
prints a message, inserting the values of the 
as needed.
Details
- Message generates output on the channel $Messages.
- You can switch off a message using Off[symbol::tag]. You can switch on a message using On[symbol::tag].
- Between any two successive input lines, Mathematica prints a message with a particular name at most three times. On the last occurrence, it prints the message General::stop.
- Off[General::stop] makes Mathematica not stop repeating messages.
- During the evaluation of a particular input line, names of messages associated with that input line are appended to the list $MessageList, wrapped with HoldForm. At the end of the evaluation of the n
input line, the value of $MessageList is assigned to MessageList[n]. - Message[mname, e1, e2, ...] is printed as StringForm[mess, e1, e2, ...] where mess is the value of the message mname. Entries of the form
in the string mess are replaced by the corresponding 
. - Given a message specified as
, Message first searches for messages 
for each of the languages in the list $Language. If it finds none of these, it then searches for the actual message 
. If it does not find this, it then performs the same search procedure for General::tag. If it still finds no message, it applies any value given for the global variable $NewMessage to symbol and 
. - If you specify a message as
, then Message will search only for messages with the particular language lang.
New in 1
