[EMBOSS] Monoisotopic or Average mass

[Mehrotra, Sudeep]

Hello,

I am trying to figure out how molecular weight of the peptide fragments in
EMBOSS program "DIGEST" is calculated if enzyme used for digestion is Trypsin.

Monoisotopic mass of each constituent AA residues in a given peptide sequence+
monoisotopic mass of water
or
Average mass of each constituent AA residues in a given peptide sequence
+average mass of water

A quick response would be appreciated.

Thanking You
Sudeep