TaggingRules is an option for selections that specifies a list of strings to be associated with a selection.

f /: lhs := rhs assigns rhs to be the delayed value of lhs, and associates the assignment with the symbol f.

f /: lhs = rhs assigns rhs to be the value of lhs, and associates the assignment with the symbol f.

TakeWhile[list, crit] gives elements e_i from the beginning of list, continuing so long as crit[e_i] is True.

Tally[list] tallies the elements in list, listing all distinct elements together with their multiplicities.Tally[list, test] uses test to determine whether pairs of elements ...

TeXForm[expr] prints as a TeX version of expr.

TextCell["string"] gives a text cell that can appear in a Mathematica notebook.TextCell["string", " style"] gives a text cell with the specified style.

TextJustification is an option for Cell and Inset which specifies how much lines of text can be stretched in order to make them be the same length.

Text[expr] displays with expr in plain text format. Text[expr, coords] is a graphics primitive that displays the textual form of expr centered at the point specified by ...

TextRecognize[image] recognizes text in image and returns it as a string.