PreDecrement (Built-in Mathematica Symbol)

--x decreases the value of x by 1, returning the new value of x.

PreemptProtect (Built-in Mathematica Symbol)

PreemptProtect[expr] evaluates expr, without any interruption from preemptive evaluations.

PreIncrement (Built-in Mathematica Symbol)

++x increases the value of x by 1, returning the new value of x.

Prepend (Built-in Mathematica Symbol)

Prepend[expr, elem] gives expr with elem prepended.

PrincipalValue (Built-in Mathematica Symbol)

PrincipalValue is an option for Integrate that specifies whether the Cauchy principal value should be found for a definite integral.

PrivateFontOptions (Built-in Mathematica Symbol)

PrivateFontOptions -> {opt_1 -> val_1, opt_2 -> val_2, ...} is an option for selections that specifies settings for various font suboptions.

Protected (Built-in Mathematica Symbol)

Protected is an attribute which prevents any values associated with a symbol from being modified.

PutAppend (Built-in Mathematica Symbol)

expr >>> filename appends expr to a file. PutAppend[expr_1, expr_2, ..., " filename"] appends a sequence of expressions expr_i to a file.

Put (Built-in Mathematica Symbol)

expr >> filename writes expr to a file. Put[expr_1, expr_2, ..., " filename"] writes a sequence of expressions expr_i to a file. Put["filename "] creates an empty file with ...

Quit (Built-in Mathematica Symbol)

Quit[] terminates a Mathematica kernel session.