# String Model

The string model is the simplest model to use and define.

To use a string model, after adding the tool, configuring the ROI and setting the character Feature Size, process the tool (press the Book icon). Then create your string model (from the Tool menu, select Edit Models), by entering the number of characters the string should contain in the Minimum Length field.

The tool will return the specified number of characters that are present in the ROI that lie along a single horizontal line, which is defined by using the Angle parameter, and is the allowable deviation from horizontal.