Swizzler

From Fmepedia

The Swizzler - also known as the Multiple Datasource Selection Tool - is a tool that allows a user to select multiple source datasets in a simple yet flexible manner.

Above: The Swizzler is opened using the [+] button on a selection dialog.

Above: The Swizzler.

Notice in the above screenshot how the Swizzler enables selection of multiple datasets (or feature types in a folder dataset) and an entire folder of files, and has the option to include all subfolders too. The big advantage over the regular selection tool is that the source datasets can reside in different folders (in the standard tool all files must reside in the same folder).

Be careful not to confuse the Swizzler with that part of a Custom Format called the Swizzle.