=== Drawing CAD Objects in the Active Color Group ===
At any time, only Only one color group of the Navigation Tree navigation tree is active, where all at any time. All the newly drawn objects are placed and listedbelong to the active color group. CubeCAD displays the active color's name in boldletters. When you start [[EM.Cube]] for the first time and draw a new object in CubeCAD, a default grey color named "Color_1" is immediately created and set as the active color. Every time you create a new color, it is set as the active color. To change the active color, right -click on the name of a color group and select '''Activate''' from the contextual menu. New objects will now be added under the new active color.
To draw an object in [[EM.Cube]], click one of the many '''Object''' buttons in '''Object Toolbar''' and start drawing a new object in the project workspace. Alternatively, you can call on any object creation tool through one of the menu items '''Menu > Object ⥸ Solids''', '''Surfaces''' or '''Curves''' submenus. Once an object creation tool is selected, the shape of the cursor changes to a cross, signifying that [[EM.Cube]] is in object creation mode. Left -click anywhere in the Main Window min window to draw an object of the selected type. While the new object is being drawn, a property dialog appears on the lower right corner of the screen. Also, a small '''Help Tip''' window opens up on the upper right corner of the screen that guides you through the drawing process. The property dialog allows you to customize the new object's dimensions and other parameters. The entered values for lengths length parameters are always in the currently selected project units and angles are measured in degrees.
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[[Image:activecolor_new.png|thumb|left|420px480px|Setting the active color.]]
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===The Property Dialog & Object Parameter Types===
Each CubeCAD object has a number of properties that are characteristic to the object type and are listed in its '''Property Dialog'''. When you draw a new object, its property dialog opens up while you are drawing it. After the new object has been created, its properties dialog remains open until you close it. To open the property dialog of an object, double click on the object's surface in the project workspace or first select it and then right click on its surface and select '''Properties...''' from its contextual menu. You can also open an object's property dialog by right -clicking on its name in the navigation tree and selecting '''Properties...''' from the contextual menu. The diagram on the right figure below shows the property dialog of a Box object. <table><tr><td> [[Image:box_tn_new.png|thumb|left|480px|A geometric object's property dialog and its edit handles.]]</td></tr></table>
All object property dialogs share some common fields:
CAD objects are characterized by their Local Coordinate Systems (LCS). Spatial information contains two sets of information: '''LCS Center'''– the X-, Y-, and Z-coordinates of the origin of the local coordinate system, and '''LCS Rotation''' – the right-sense rotation angles of the object about the X, Y, and Z-axes before the object is translated to the specified base center. As you will see later, objects in CubeCAD can be linked to each other. The linkage information part of the property dialog shows whether an object is linked to another "parent" object and if so, in what manner. The type and number of property fields are unique to each native CubeCAD object. The box object, for instance, contains Length, Width and Height values along with Lock Base and Cap Ends check boxes.
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[[Image:box_tn_new.png|thumb|left|540px|A CAD object's property dialog and its edit handles.]]
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===Modifying Objects Using Edit Handles===