OverBar
(Built-in Mathematica Symbol) OverBar[expr] displays with a bar over expr.
OwenT
(Built-in Mathematica Symbol) OwenT[x, a] gives Owen's T function T(x, a).
PageFooters is an option for notebooks that specifies what should be inserted as the footer of each page of a notebook when it is printed.
PageHeaders is an option for notebooks that specifies what should be inserted as the header of each page of a notebook when it is printed.
PasteButton[expr] represents a button that pastes expr whenever it is pressed. PasteButton[label, expr] displays with label on the button.
Path
(Built-in Mathematica Symbol) Path is an option for Get and related functions which gives a list of directories to search in attempting to find an external file.
PermutationList[perm] returns a permutation list representation of permutation perm.PermutationList[perm, len] returns a permutation list of length len.
Plain
(Built-in Mathematica Symbol) Plain represents a font that is not bold, italic, or underlined.
Position[expr, pattern] gives a list of the positions at which objects matching pattern appear in expr. Position[expr, pattern, levelspec] finds only objects that appear on ...
PreferencesPath is a global option that specifies which directories are searched for user-specific settings when Mathematica is started.