| <table><tr><td>Property group</td><td>Property Name</td><td>Description</td><td>Misc.</td><td>Note</td></tr><tr><td>Data Source Priority</td><td>Data Source</td><td>Specify the main source, which serves as the basis for the combine operation in the data sources, to the top position.</td><td>Other UI</td><td>Refer to the Usage.</td></tr><tr><td>Selection options</td><td>Variable Matching Method</td><td>When combining data, choose whether to base for merging on Variable Name or Variable Position.</td><td/><td>Variable Name, Variable Position</td></tr><tr><td>Selection options</td><td>Variables to Include</td><td>Specify Variables to Include in the results.</td><td>Required</td><td>Main Source Only, All sources</td></tr><tr><td>Selection options</td><td>Add data source index</td><td>A column is added for which data source comes from. Data source index is added in each row of data. The default name of the created column is "Data Source", which can be modified.</td><td>check-box</td><td/></tr></table> |