NotPrecedes[x, y, ...] displays as x \[NotPrecedes] y \[NotPrecedes] ....
PaddedForm[expr, n] prints with all numbers in expr padded to leave room for a total of n digits. PaddedForm[expr, {n, f}] prints with approximate real numbers having exactly ...
ParagraphIndent is an option for Cell which specifies how far in printer's points to indent the first line of each paragraph of text.
SelectionEvaluateCreateCell[notebook] takes the current selection in a notebook and creates a new cell containing the result obtained by evaluating the contents of the ...
SetFileDate["file"] sets the modification and access dates for a file to be the current date.
Splice
(Built-in Mathematica Symbol) Splice["file"] splices Mathematica output into an external file. It takes text enclosed between < * and * > in the file, evaluates the text as Mathematica input, and replaces ...
SquareSubsetEqual[x, y, ...] displays as x \[SquareSubsetEqual] y \[SquareSubsetEqual] ....
SquareSupersetEqual[x, y, ...] displays as x \[SquareSupersetEqual] y \[SquareSupersetEqual] ....
StringSkeleton[n] represents a sequence of n omitted characters in a string printed with Short. The standard print form for StringSkeleton is an ellipsis.
StyleDefinitions is an option for notebooks that gives definitions for the styles that can be used in a notebook.