===Variety of EM.Cube's Native Object Types===
In [[EM.Cube]], objects are generally categorized into four types: [[Solid Objects|Solids]]solids, [[Surface Objects|Surfaces]]surfaces, [[Curve Objects|Curves curves and Points]]points. A Point is a dimensionless object that is represented by a set of coordinates (x,y,z). Curves are one-dimensional objects, whose length can be measured. The simplest curve object is a (straight) line. Surfaces are two-dimensional objects whose surface area can be measured. A surface is usually characterized by a number of edges that enclose the object's area. The edges meet at vertices or nodes. The simplest surface object is a rectangle strip, which has four edges and four vertices. Solids are three-dimensional objects whose volume can be measured. A solid is usually characterized by a number of faces that enclose the object's volume. Faces meet at edges and edges meet at vertices or nodes. The simplest solid object is a box, which has six faces, twelve edges and eight vertices. In addition to the specific standard object types, there are generic [[Curve Objects|curve objects]], generic [[Surface Objects|surface objects]] and generic [[Solid Objects|solid objects]]. Most external CAD objects are imported as objects of the generic type.
In view of the drawing process and geometrical properties, objects can also be divided into two groups: '''Dimensional''' objects and '''Nodal''' objects. A dimensional object is characterized by a local coordinate system (a center and local X-, Y- and Z-axes) and a number of dimensional parameters such as length, width, height, radius, etc. Examples of dimensional objects are box, sphere, rectangular strip, line, helix, etc. [[EM.Cube]] provides a diverse list of native parameterized dimensional objects in all the three categories of curves, surfaces and solids. A nodal object is characterized by a set of points (nodes). [[EM.Cube]]'s nodal objects include Polystrip, Polyline, NURBS Strip, NURBS Curve and Polymesh objects.
[[CubeCAD]] provides a diverse set of [[Standard Objects|standard objects]] that are fully parameterized. In addition to the center coordinates and rotation angles, these objects have a variety of dimensional parameters that are used to set and control their size and geometrical shape. More complex objects can be created by editing and combining these basic shapes. Objects can be created by clicking on one of the object buttons on the '''Object Toolbar''' or from the '''Object > Solid''', '''Object > Surface''', or '''Object > Curve''' menus. Once an object tool is selected, left click anywhere on the work plane to draw the object. The following table show a list of [[EM.Cube]]'s standard solid, surface and [[Curve Objects|curve objects]]:
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