SqrtBox
(Built-in Mathematica Symbol) SqrtBox[x] is a low-level box construct that represents the displayed object Sqrt[x] in notebook expressions.
Subscript[x, y] is an object that formats as x_y. Subscript[x, y_1, y_2, ...] formats as x Subscript[y, 1], Subscript[y, 2], ....
Thick
(Built-in Mathematica Symbol) Thick is a graphics directive that specifies that lines which follow should be drawn thick.
Thin
(Built-in Mathematica Symbol) Thin is a graphics directive that specifies that lines which follow should be drawn thin.
TransformationMatrix[tfun] gives the homogeneous matrix associated with a TransformationFunction object.
YuleDissimilarity[u, v] gives the Yule dissimilarity between Boolean vectors u and v.
$BaseDirectory gives the base directory in which systemwide files to be loaded by Mathematica are conventionally placed.
$BatchInput is True if input in the current session is being fed directly to the Mathematica kernel in batch mode.
$UserBaseDirectory gives the base directory in which user-specific files to be loaded by Mathematica are conventionally placed.
ClassName[javaclass] returns, as a string, the fully qualified name of the specified JavaClass. ClassName[javaobject] returns the fully qualified name of the Java class of ...