Entry Id Delimiter Use this text box to specify the ID Delimiter, which separates entry Id from entry description in the Input SAS Data Set . The default delimiter is double forward slash " // ", which is used by Affymetrix in its Annotation file. To Specify a Different Delimiter: Highlight the default delimiter in the text box. Type the new delimiter over the default delimiter. If you change your mind and would like to reset the field, click Clear .