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# Correlations > Configuration recording options

This pane enables you to configure settings for the Correlation tab.

To access: VuGen > Recording Options > Correlations > Configuration

User interface elements are described below:

UI Element | Description
--- | ---
Rules Scan | Apply correlation rules when performing correlation scan. For details, see Automatic correlation and Correlations > Rules recording options.
Automatically correlate values found | Design Studio automatically correlates dynamic values found using the rules scan.
Record Scan | Scan for correlations with the record based engine. For details, see Automatic correlation.
Replay Scan | Scan for correlations with the replay based engine. For details, see Automatic correlation.

### Record and replay scan configuration

UI Element | Description
--- | ---
API used for correlations | Select the API function to be used for correlation: Boundary based: web_reg_save_param_ex Regular Expression: web_reg_save_param_regexp Note: If you change the API function, the changes will only take effect after a new scan.
Excluded strings | Enables you to enter strings that should be ignored by the record and replay scan. For details, see Exclude strings or content types from correlation scans.
Excluded content types | Enables you to enter content types that should be ignored by the record and replay scan. For details, see Exclude strings or content types from correlation scans.
Ignore values shorter than [ ] | Enables you to define how short a dynamic value can be before it is ignored by the record or replay scan. Default length is 4 characters.
Ignore values longer than [ ] | Enables you to define how long a dynamic value can be before it is ignored by the record or replay scan. Default length is 400 characters.
Warm me if the dynamic string size is greater than 10 KB | Issues a warning if you try to correlate a string whose size is 10 KB or larger.
Ignore case when searching for correlatable values | Disable case sensitivity during correlation scan.

### Record scan configuration

UI Element | Description
--- | ---
Heuristic level | Enables you to set the filter level that controls the amount of correlation results that are returned. The higher the filter level, the shorter time the scan will take to run. High. Design Studio performs a detailed scan returning a highly refined result set. Medium. Design Studio performs a less detailed scan returning more results. This is the default setting. Low. Design Studio performs a more detailed scan returning the most results. This setting may produce many unwanted results.

### Replay scan configuration

UI Element | Description
--- | ---
Scan for differences between snapshots using | Select a comparison method: HTML Comparison. Display the differences in HTML code only. Text Comparison. Display all text, HTML, and binary differences.

## See also

- Correlate scripts using Design Studio

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