Current description disagrees with format specification at htslib.org edit

If anything is a specification for the pileup format, it is the description at http://www.htslib.org/doc/samtools-mpileup.html

The current description on this wikipedia page only describes a small subset of that. It misses a major feature, in that the htslib version supports more than one data source, with info about each presented separately in the pileup file. Typically each source is represented by 3 columns.