writes expr to the specified MathLink connection.
- link must be an active LinkObject, as returned by functions like LinkLaunch or Links.
- You can use LinkWrite[link, Unevaluated[expr]] to write expr to the link without evaluating it.
- The head of expr will often be a packet that specifies how expr should be processed by the program which receives it.
- When LinkWrite is used to send data to a Mathematica kernel, EnterTextPacket["string"] enters the text of an input line, and EvaluatePacket[expr] sends an expression for evaluation.
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