# Blue Read Tool Block Properties

When you click on an individual Blue Read Tool in a ViDi Sub Task Block, the following Properties are available:

| Property | Description
--- | --- | ---
| Name | Defines the name of the ViDi tool, which will be displayed in the ViDi Sub Task, and also defines the Tag name of the block within the Cognex Designer IDE. The name must composed of alphanumeric characters, and cannot start with a number or contain spaces.
Graphics
Features | When enabled, the tool will generate a graphic over each feature that is found by the tool. This can be used to graphically display the results on an HMI.
Matches | When enabled, the tool will generate a graphic and label over each match that is found by the tool.
Region of Interest | When enabled, for each View, a rectangular ROI graphic will be generated for each ROI used by the tool.
Note: The state of the graphics can also be controlled using the Configure View Records interface, and the settings there will supersede the tool's Property setting.
Input Pins
Marking | Specifies whether or not the tool will use the default inputs (image, mask and poses) or the Marking input pin. When the Marking checkbox is enabled, the three inputs will be replaced with a single Marking input pin. Markings are generated by the Cognex ViDi Tools
Output Pins
Max Views | Since each ViDi tool is capable of producing multiple Views, the Max Views property controls the number of Views that will be generated as Output Pins by the tool. When set above 1 (the range is 1 to 20), the tool will produce Output Pins for the corresponding number of Views.
Number of Features | When enabled, for each View, the tool will generate an integer value representing the number of features that were found by the tool. This value can be passed into another Tool Block, or assigned to a Tag and used to display the results on an HMI.
Strings Read | When enabled, for each View that is generated, the tool will generate an array of strings, representing the strings that were found and read by the tool. This value can be passed into another Tool Block, or assigned to a Tag and used to display the results on an HMI.