This is documentation for Mathematica 8, which was
based on an earlier version of the Wolfram Language.
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Most

Most[expr]
gives expr with the last element removed.
The head need not be List:
Most works on SparseArray objects:
Nest the operation of finding most of a list:
Most[expr] is equivalent to Drop.
The expression is evaluated before Most is applied:
Most always operates on the FullForm of expressions:
New in 5