> For the complete documentation index, see [llms.txt](https://help.auxalia.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.auxalia.com/plant-tools/plantexpresstools/how-to-use/off-page-connector-manager/usage/user-interface.md).

# User Interface

### <mark style="color:blue;">Layout</mark>

The OPC Manager is a modeless form. It is NOT an AutoCAD palette. Therefore it cannot be docked.

Let's have a look at the Layout of the OPC Manager's user interface.

1.Left Toolbar\
This toolbar affects the trees and their content.

2.Right Toolsbar\
This toolbar affects the Property Mapping grid (not shown in this image).

3.Outgoing OPC tree\
Shows the OPC which have a Flow Direction pointing outwards of the PID.

4.Incoming OPC tree\
Shows the OPC which have a Flow Direction pointing inwards to the PID.

5.Property mapping\
This area shows a data grid in case there are conflicts between the properties of connected OPCs.

6.Viewer\
The viewer shows OPCs or drawing. It is the same viewer as used in Plant 3D.

7.Status Bar\
Gives you a quick overview of the total number of OPCs.

![](/files/0JsxAsfHwjZ17srAP8NY)

Table of Content:

* [Left Toolbar](/plant-tools/plantexpresstools/how-to-use/off-page-connector-manager/usage/user-interface/left-toolbar.md)
* [Right Toolbar](/plant-tools/plantexpresstools/how-to-use/off-page-connector-manager/usage/user-interface/right-toolbar.md)
* [Out/In Trees](/plant-tools/plantexpresstools/how-to-use/off-page-connector-manager/usage/user-interface/outin-trees.md)
* [Mapping](/plant-tools/plantexpresstools/how-to-use/off-page-connector-manager/usage/user-interface/mapping.md)
* [Viewer](/plant-tools/plantexpresstools/how-to-use/off-page-connector-manager/usage/user-interface/viewer.md)
* [Context Menu Plant 3D](/plant-tools/plantexpresstools/how-to-use/off-page-connector-manager/usage/user-interface/context-menu-plant-3d.md)