Mathematica has not only convenient built-in multilingual dictionaries, but also built-in information on word meaning, structure and usage, as well as the relationship ...

MIME type: application/x-bzip2. BZIP2 compression method and file format. General-purpose lossless compression method. Occasionally used for archiving data on Unix systems ...

"TemplateSelection" is a front end token that inserts a function template to the right of the insertion point.

Align Selected Graphics makes selected graphics cells line up with the first graphic in the selection.

Get Coordinates displays the approximate coordinate values of the mouse position.

Printing Options sets options for printing a notebook. Mathematica saves these settings with the notebook.

AddOnHelpPath is a global option that specifies which directories are searched for additional help files used within the help system.

Alignment is an option which specifies how the contents of a displayed object should be aligned within the available area in the object.

AnimationRepetitions is an option to Animate and related functions that specifies how many times the animation they create runs before stopping.

AppendTo[s, elem] appends elem to the value of s, and resets s to the result.