Schema document for unimod.xml file version 2.0 Schema minor version number The modification delta defined as a composition Artefact peaks associated with this modification This will refer to a chemical element This will refer to a chemical element A neutral loss for the sequence ions, e.g. loss of phosphate A neutral loss from the precursor References an aa-entry in amino_acids-table E.g. Anywhere Several specificities (non-conflicting) can be grouped into one mod when outputting it to mod_file. One can group two or more specificities if they have the same spec_group-value. If the attribute is omitted then we assume that all specificities for the current modification are non-conflicting and belong to a group number 1. This will refer to a chemical element Neutral losses can be potentially a scoring series (false) or non-scoring satellite peaks (true) True if this is a required neutral loss Symbol for chemical element, isotope or a brick title Count for this element or isotope. Can be negative This list can be updated in future. This list can be updated in future.