> For the complete documentation index, see [llms.txt](https://docs.openbrim.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.openbrim.org/developers/paramml-developer-guide/core-objects/cad-objects/cadd-object.md).
# CADD Object
The "CADD" object in OpenBrIM enables users to create and annotate 2D drawings, such as elevation views and floor plans of the structure.
Users can either add a "CADD" object and create 2D drawings using the ParamML code, or they can add child elements of the "CADD" object through the "CADD" window to create the 2D drawings.
CADD drawings are created with the help of the following sub-items.
**1) CADDShape:**
This object is used to draw a polygon.
**Example:**
```xml
```
 To view this example in the library, see ()
**2)CADDRect:**
This object is used to draw a Rectangle.
**Example:**
```xml
```
 To view this example in the library, see ()
**3) CADDLine:**
The "CADDLine" object draws a line in a 2D drawing. The line style and thickness can be adjusted using the parameters of "**Thickness**," "**Color**," and "**LineStyle**." The line thickness is set with the "Thickness" parameter, and the color is set with the "Color" parameter.
The "LineStyle" parameter determines the number of lines and spaces, for example, LineStyle=\[5,15] will consist of 5 lines followed by 15 spaces.
**Example:**
```xml
```
```xml
```
 To view this example in the library, see ()
**4) CADDEllipse:**
This object is used to draw a Ellipse.
**Example:**
```xml
```
 To view this example in the library, see ()
**5) CADDCircle:**
This object is used to draw a Circle.
**Example:**
```xml
```
 To view this example in the library, see ()
**6) CADDArc:**
This object is used to draw an Arc.
**Example:**
```xml
```
 To view this example in the library, see ()
**7) CADDBezier**
This object is used to draw a bezier curve.
**Example:**
```xml
```
 To view this example in the library, see ()
**8) CADDCurve:**
This object is used to draw curves.
**Example:**
```xml
```
 To view this example in the library, see ()
**9) CADDFreeline:**
This object is used to draw free hand line.
**Example:**
```xml
```
 To view this example in the library, see ()
**10) CADDText**
This object allows to put text on the CADD drawing. Just like the "Text3D" object || Expressions written in the expression show the results.
**Example:**
```xml
```
 To view this example in the library, see ()
**11) CADDDimensionLine:**
CADDDimensionLine object provides dimension of a length measured in a 2D drawing.
**Example:**
```xml
```
 To view this example in the library, see ()
**12) CADDDimensionRadius:**
CADDDimensionRadius object provides dimension of a radius of a circle measured in a 2D drawing.
**Example:**
```xml
```
 To view this example in the library, see ()
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