Using this module of the program, you can create an image of unit by using of a set of the created elements, which can be designed, using primitives. Ready unit adds to the horizontal menu of the program. By this way you create your own library of units, which can use in the future projects, increasing design opportunities of the program. Primitives can be 2D and 3D.2D- primitives can not be used for association, internal cutting or cutting of section (operation from a tape with icons), because they are not volumetric bodies. But they can be transformed in such (3D) if they describe the closed area.With this purpose the primitives, closing bidimensional area are united ( from a tape with operations) and then creates the closed area.Set the size of missing third (Z) axis of the coordinate system . Received 3D primitive can be used together with standard for creation of the any forms depending on the purposes: association with other bodies, cutting of parts. During creation of units there is necessary a manufacture of various elements. Therefore is practical to use some temporary working drawings simultaneously. Open some new projects, in everyone activate the module Construction of new unit (Construction of new unit in the menu) and construct the elements of unit in them. After that, using operations the Copying and Create copy from the vertical menu, throw ready elements in one project, where it is necessary to set and to unit them. Frequently used elements (Handle, leggs, ornaments for a cutting) you can save in the separate projects, using a standard way (Operation - > Save new project), without saving them   as units and if necessary to use them in units. After the end of work with new  unit you must close the form Construction of new unit and tape with icons - operations. Otherwise at next  it opening AutoCAD will informs you   that this program module is already active (press the button OK to open the form).  

The operation returns you in the working drawing, hiding   the main form without closing the program module. for manipulation with objects in the drawing and work with a tape from icon - operation or menu of the program - horizontal and vertical. The form Construction of new unit opens by an icon . The set new view remain active at positioning of primitives, until then when it will not be changed again from a tape.

The line is a basic primitive  for creation of more complex elements of unit. With it help you can build everyones oval forms, to transform them in area and create three-dimensional bodies from them. In fields Length on X and Length on Y enter the exact sizes in cm.Depending on that   what it is necessary to be a line - horizontal or vertical, add a mark in one of fields Without deviation on Y or in the other for X. The entered size in the other field automatically ignores and you receive a line with exact length or height. The line draws from the point, specified in the drawing, (button Set) from left to right or from below upwards.If you remove marks in two fields Without deviation and enter value only on X or on Y, it will be done line with the deviation, specified from you, (show the second-end point of a line in the drawing). But if have entered values in two fields, the line will be diagonal. Here, certainly, have matters if the button ORTHO in the status tape AutoCAD is switched on (it allows deviations only on 90 degrees). The value in a field Height of line creates a tape. It is not advisory to close an element in area, in which participates a line with height .

Draws an arch. Object is easy for work and extremely flexible. Values of two corners for firstl and end point are set in the form by default and if you want you can change them. Value Height of arch will extend a line of an arch, creating an arch - tape on Z.Its position in the drawing defines with the button Set. Then use manipulating points to change its position, to pick up the end of an arch to other objects or to change radius.

Creates two dimensional circle. At zero value in a field Height of circle you will receive a flat circle. If you enter value, creates an external ring about a circle.Volume of a circle is not filled in two cases. Marking Fills volume of a circle, you automatically ignore height of a circle (external tape). The flat volumetric circle creates.

Draws an bidimensional polyline, which represents the connected sequence from lines or arches. You can create to 8 lines, using consecutive specifying of a position of a point, describing them in the coordinate system. The primitive creates automatically in 2D plain on X and Y in coordinate system, irrespective of the current view. The first (start ) point is   absolute 0   of your primitive on   two of axes of the coordinate system. Each next point closes a line and is expressed by values of a deviation in relation to a point 1 (zero), entered in respective fields   for   two axes in centimeters. Zero values in fields for distances of a point interrupts broken line. To change a way of linkage between two points (number in Line) from a line to an arch, put a mark in a field for a line in Draw primitive. Radius of an arch can be expressed as a ratio in conformity length of a line. Value of a ratio can vary from 0.99 to -0.99. It can be entered in "cm" too. Values in field Height of a line take out a line on Z.If you want to connect the start (first) point and entered last (end) point by line automatically , you must mark Close area. ЗFor direct closing and creation of area (region) mark an option Fills and closes area by a line. ЗThe closing of area automatically ignores height of a line. Created as values primitive adds in the drawing with the button Set. It returns you in the drawing for the specification of a point of plotting (point 1 of the scheme). Each next point adds its own deviations to the specified point in the drawing. It is possible to use points in the drawing for manual final formation of a figure, necessary for you. Created 2D primitive can be used for creation of area and subsequent three-dimensional body or as design line (3D Element - pipe, 3D profiles).

Draws an 2D or 3D ellipse.Enter the sizes of two radiuses in cm. You can specify the model of an ellipse (in vertical or in a horizontal position) in a view in which you are.

Създава област - Writes created an 2D ellipse as area (region) with the purpose to exttrude solid (for example under an angle)

Create three-dimensional body - Automatically creates three-dimensional body (solid) from created area having in view the entered value for Completeness of a body in cm.. This option has direct connection with Create area.

The button Create returns in the drawing for specifying of position of the central point of an ellipse.

If the option Create area is switched off, you can manually change radiuses. Use their points for manipulation. You must have in view that values of radiuses have direct relation and the kind of ellipse is defines from the correlation between two radiuses.

Creates polygon. Enter radius of a circle, on which the points (tops) of the polygon will be projected. The circle actually does not exist. It is used only as a way of the description of the polygon. The number of the countries can not be less than 3 (triangle) and it is equal on number of angles. After its creation in the drawing you can to use points for intercepting on corners to change the form of the polygon.