The Source pane is split into two tabs - Source Data, and Parameters.   This is the definition of the source that data is to be read from.

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Source Data Tab

The Source Data tab will display the detail that has been pulled from the source definition that was listed on the main mapping screen. In this example below, the source definition is a File Definition called Excel File Def 1.

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Excel File Def 1 contains the following - an Excel file called FMEPRECALLS. Depending on the definition selected, this could be any type of source data.

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So in the Map, the file FMEPRECALLS appears under Source Data.

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Click on FMEPRECALLS to expand and display the contents of this file into the lower panel.

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Parameters Tab

Click on this tab to identify and list any Parameters that are specific to this Map in the upper panel, and any Global Parameters in the lower panel.

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For more information about Global Parameters, please review Parameters.

For more information about Local Parameters, please review Parameters Tab (Map).