Insert > File Path... (Mathematica Menu Item)

File Path opens a dialog to select and paste the full pathname of a file into the text at the insertion point.

Insert > Output from Above (Mathematica Menu Item)

Output from Above copies the contents of the nearest preceding output cell.

Insert > Page Break (Mathematica Menu Item)

Page Break inserts a page break at the horizontal I-beam.

Window > Show Ruler (Mathematica Menu Item)

Show Ruler toggles ruler display along the top of a notebook.

Cell > Grouping > Ungroup Cells/Group ... (Mathematica Menu Item)

Ungroup Cells/Group Normally ungroups the selected sequence of cells.

FileByteCount (Built-in Mathematica Symbol)

FileByteCount["file"] gives the number of bytes in a file.

SampleDepth (Built-in Mathematica Symbol)

SampleDepth is an option for sound primitives that specifies how many bits should be used to encode sound amplitude levels.

$LicenseServer (Built-in Mathematica Symbol)

$LicenseServer is a string that gives the name of the license server that is currently authorizing Mathematica to be run.

$OperatingSystem (Built-in Mathematica Symbol)

$OperatingSystem is a string giving the type of operating system under which Mathematica is being run.

DiscreteMath`CombinatorialFunctions` (Mathematica Compatibility Information)

CatalanNumber and Subfactorial have been added to the built-in Mathematica kernel. CatalanNumber and Subfactorial can now be evaluated numerically for noninteger arguments. ...