--- title: "Preferences options" canonical: "https://help.vicon.com/space/Tracker41/14320140/Preferences%20options" format: markdown --- You can access all preferences via **Settings** menu > **Preferences**. The Preferences dialog box is split into sections for user and system preferences. > Macro (scroll-only) > > > Macro (toc) > Macro (scroll-pagebreak) # User Preferences In **User Preferences** you can view and/or change the settings in these subsections: > Macro (scroll-only) > > > Macro (toc) ## Folders section > Macro (scroll-tablelayout) | **Option** | **Description** | | --- | --- | | Calibration Objects | Specifies where Tracker and other Vicon software saves all custom calibration objects. This does not include the standard calibration wand objects that can be found in *C:\Program Files\Vicon\Tracker4.1\CalibrationObjects* File types in this folder are .*vsk*. The default folder location is: *C:\Users\Public\Documents\Vicon\CalibrationObjects* | | Objects | Specifies where Tracker saves all exported objects from the Tracking panel (see [Work with objects](https://vicon-help.atlassian.net/wiki/spaces/Tracker41/pages/14320634))
File types in this folder are .*vsk*. The default folder location is: *C:\Users\Public\Documents\Vicon\Objects* | | Prop Meshes | Specifies the folder Tracker opens when you load a prop mesh.
File types in this folder are *.fbx*
The default folder location is: *C:\Users\Public\Documents\Vicon\PropMeshes* | ## General section > Macro (scroll-tablelayout) | **Option** | **Description** | | --- | --- | | Alt key to select in views | When selected, holding the ALT key enables you to:
- Draw a box with the left mouse button in 2D and 3D views to multi-select centroids, markers, or objects - Draw a box with the right mouse button in Graph Plots to zoom in on a range of data
Default is enabled. | | Middle mouse button scrub in 2D & 3D views | When selected, holding the middle mouse button and dragging left or right enables you to scrub backward and forward through review data. Default is enabled. | | Middle mouse button scrub sensitivity | Controls the sensitivity of the cursor when used for scrubbing with the middle mouse button. Default is 5. | | Mouse wheel jog in 2D & 3D views | When selected, enables you to use the mouse wheel to step through frames in Review mode. | | Mouse wheel jog in frames | Controls the increment of frames progressed (forward or backward) when using the mouse wheel to scrub through review data. Default is 5. | | Enable auto-save | When selected, this option enables the system to automatically save certain configuration files. For more details, see [Tracker fundamentals](https://vicon-help.atlassian.net/wiki/spaces/Tracker41/pages/14320351). Default is enabled. | | Ask before recovery of latest settings | When selected, if Tracker is re-launched from an unexpected shutdown, a pop-up asks which set of settings to use. For more details, see [Tracker fundamentals](https://vicon-help.atlassian.net/wiki/spaces/Tracker41/pages/14320351). Default is enabled. | | Auto-save interval | Controls the interval (in seconds) in which Tracker auto-saves its configuration files. Changing this setting has no effect if **Enable auto-save** is cleared. Default is 60 seconds. | | Start playing automatically in review mode | When selected, captures loaded in review mode begin immediately upon loading. Default is disabled. | | Warn if free space on optical data capture drive is low | When selected, Tracker warns you when your current drive is below its **Optical free space warning threshold**. Default is enabled. | | Optical free space warning threshold | This option (in GB) controls when the free space warning is issued. If the **Warn** option is cleared, changing this setting has no effect. Default is 50 GB. | ## System Health section > Macro (scroll-tablelayout) | **Option** | **Description** | | --- | --- | | Show Bump Notifications Per Camera | When selected, a notification is displayed for each bumped camera in the System panel and the Cameras view. | ## Update Notificationssection For features in this section to work, you must be connected to the Internet. If you're connected to the Internet, the version numbers automatically update; if you are offline, these version numbers may not be up-to-date. > Macro (scroll-tablelayout) | **Option** | **Description** | | --- | --- | | Show notification for application version 3.10.0.145497h | When selected, Tracker notifies you if an updated version of Tracker is available. Default is enabled. | | Show notification for firmware version 725 | When selected, Tracker notifies you if your firmware is out-of-date. Default is enabled. | ## Objects section > Macro (scroll-tablelayout) | **Option** | **Description** | | --- | --- | | Enable object evaluation | When selected, the system performs object evaluations in the background. For more information. see [Understand object evaluation](https://vicon-help.atlassian.net/wiki/spaces/Tracker41/pages/14320689). Default is enabled. | | Object evaluation step limit | Maximum number of steps to allow for evaluating each object pair. Increasing this value will provide more certainty that object similarities do not exist but will result in decreased performance.
Changing this option has no effect if Enable object evaluation is disabled.
Default is 1000. | | Object evaluation uses tracking entrance threshold | This option controls which entrance threshold is used for object evaluation.
If set to default (not enabled), the entrance threshold for object confusion evaluation is set to 1 and all markers are used to evaluate similarities between objects. If enabled, object confusion evaluation uses the entrance threshold specified in the Processing panel or the object preset, if one was set for an individual object. An entrance threshold less than 1 results in more object confusion warnings.
Default is not enabled. | | Object evaluation warning threshold (mm) | Threshold for differences between objects, expressed in mm. This warning indicates the object either closely matches another object or another view of itself (see [Understand object evaluation](https://vicon-help.atlassian.net/wiki/spaces/Tracker41/pages/14320689)).
Changing this option has no effect if Enable object evaluation is disabled.
Default is 3 mm. | ## Connections section > Macro (scroll-tablelayout) | **Option** | **Description** | | --- | --- | | Control server alias | Enter the alias to be used in the Vicon Control app server list. If you leave this field blank, the PC host name is used. | > Macro (scroll-pagebreak) ## Channel Cache section > Macro (scroll-tablelayout) | **Option** | **Description** | | --- | --- | | Cache Memory Limit (MB) | This option sets the limit for the amount of channel data saved to memory before it is written to disk.
**Note:** The path for channel data written to disk is configurable in the **System** **Preferences** section, in the **User Data Folder** field.
Default is 512 MB. | ## Graph Plots section > Macro (scroll-tablelayout) | **Option** | **Description** | | --- | --- | | Trace colors | This option controls the number of unique colors to be used for traces. You can choose between 9, 12, and 22 colors. The lower number of colors may assist those with limited color vision.
Default is 22 colors. | | Enable rotation unwrapping | When selected, angles are unwrapped when they exceed the typical (-π, π) radians range (see [Graph Plots reference](https://vicon-help.atlassian.net/wiki/spaces/Tracker41/pages/14319915)).
Default is enabled. | | Show pan/scale overlay graphics | When selected, graphics (such as the dead zone) for zoom/pan/scale will appear in the window (see [Change the scale of graphed data](https://vicon-help.atlassian.net/wiki/spaces/Tracker41/pages/14320539)).
Default is enabled. | > Macro (scroll-pagebreak) # System Preferences The System Preferences section contains these fields: > Macro (scroll-tablelayout) | **Option** | **Description** | | --- | --- | | Shared Data Folder | Enter or browse to the location of the folder in which you want to store data that can be shared between users. Default location is: *C:\Users\Public\Documents* | | User Data Folder | Enter or browse to the location of the folder in which you want to store data that is to be stored per user. Default location is: *C:\Users\Public\Documents* |