Bo
Bo
The font size/distance of "iH" looks like to be different from others such as iK, iQ: 
 After manully changed the color to blue, the color of the modified amino acid matches well with the setting: 
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Is that possible to add a legend in the top right corner of this type of plot: https://yulab-smu.top/pkgdocs/pkgdocs_files/figure-html/unnamed-chunk-7-1.png?
Is there a way to do semi-tryptic digestion using the getSequenceIterator function from IteratorFactory?