GEO sample file, including present/absent calls

This format includes an extra column for absent/present calls that can also be imported.
^SAMPLE = GSM21610
!sample_table_begin
ID_REF   VALUE   ABS_CALL
id1	     105.8   M
id2      32      A
id3      50.4    A
id4      57.8    A
id5      2914.1  P
!sample_table_end
Download the sample file here:
http://www.clcbio.com/madata/GEOSampleFileAbsentPresent.txt