Sentence:  “Lover,” you say; “how beautiful that is, / : That little word!” ... / Yes, it is beautiful. I have marked it long, / : Long in my dusty head its <WSD>jot</WSD> secreted, / Yet my heart never knew this word a song / : Till in the night softly by you repeated. 
Meaning of the word marked with <WSD> tags:  A brief and hurriedly written note.