SystemsModelOrder[ss] gives the order of the StateSpaceModel object ss.
TableDirections is an option for TableForm and MatrixForm which specifies whether successive dimensions should be arranged as rows or columns.
TextData[exprs] is a low-level representation of the contents of a textual cell.
VertexOutDegree[g] gives the list of vertex out-degrees for all vertices in the graph g.VertexOutDegree[g, v] gives the vertex out-degree for the vertex v.
XMLElement[tag, {attr_1 -> val_1, ...}, {data_1, ...}] represents an element in symbolic XML.
$ExportFormats gives a list of export formats currently supported in your Mathematica system.
$MaxRootDegree specifies the maximum degree of polynomial to allow in Root objects.
$NumberMarks gives the default value for the option NumberMarks, which specifies whether ` marks should be included in the input form representations of approximate numbers.
An Euler equation has the general form Euler equations can be solved by transforming them to equations with constant coefficients. This is an example of an Euler equation.
$CUDADeviceCount gives the number of CUDA devices on the system.