Reads the data from the input file.
This is the widget you will probably use most often. It reads the input data file (data table with examples) and sends the token with the data set to the output channel. It maintains a list of most recently used data files. To open a new data file, "..." button opens a standard file dialog. To reread the file, just choose it again from the pulldown menu.
In the info box, this widget displays information on number of examples, attributes and meta attributes, and information on class variable (if defined in a file).
Any of your schemas should probably start with the File widget. In the schema below, the widget is used to read the data that is then sent to both Data Table widget and to widget that displays AttributeStatistics.htm.