Input and Output Variable Types
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For a given input file format, Stat/Transfer will select a target output variable type for each input variable type.  For any given input file, these target types are automatically chosen during the optimization pass during a transfer.  If you wish to see the target types that have been chosen, use the Optimize button in the Variables dialog box or look in the file generated by the VARS command.  These target output types can be changed manually.

The actual output variable type that results from each target variable type will depend on the output file format.  The available output variable types are given for each of the supported file formats in the section for that specific format.

Note that all numerical variables are stored internally in Stat/Transfer as double precision floating point numbers and are then written out according to the assigned variable type.  Thus, no numerical precision is lost.