-Fields are separated by the tab character. 'other_attributes' are all
-other attributes after attribute 'transcript_id' field in the GTF
-file. If no other attributes are given or no GTF file is provided in
-'rsem-prepare-reference', there will be no tab after the
-tau_value field.
+'sample_name.transcript.bam' is a BAM-formatted file of read
+alignments in transcript coordinates. The MAPQ field of each alignment
+is set to min(100, floor(-10 * log10(1.0 - w) + 0.5)), where w is the
+posterior probability of that alignment being the true mapping of a
+read. In addition, RSEM pads a new tag ZW:f:value, where value is a
+single precision floating number representing the posterior
+probability.