Please note that:

Example:
DMAAAMKAVT(ACET)EQGHELSNEERNLLSVAYKNVVGARRSSW

EILNS(PHOS)PEKACSLAKTAFDEAIAELDTLNEE 
describes an acetylation of the Threonine (T) at position 10, and a phosphorylation of the Serine (S) at position 44.