Prefix for Tall Output Data Set Names Use this option to specify a common prefix to be used for the names of all tall output data sets generated by this process. If this field is blank, the name of the input data set is used as a prefix. Specified names must contain no spaces or special characters, and be no longer than 32 characters. For detailed information about the files and data sets used or created by JMP Life Sciences software, see Files and Data Sets. To Specify a Prefix: Type the desired prefix in the text field. If you change your mind and would like to reset the field, click Clear.