SlotSequence
 Usage
• ## represents the sequence of arguments supplied to a pure function.
• ##n represents the sequence of arguments supplied to a pure function, starting with the n argument.
Notes
• ## is used to represent sequences of arguments in pure functions of the form body& or Function[body]. • ## is equivalent to SlotSequence[ ] or SlotSequence[1]. • ##n is equivalent to SlotSequence[n]. n must be a positive integer. • A sequence of arguments supplied to a pure function is "spliced" into the body of the function wherever ## and so on appear. • New in Version 1.
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