Sentence:  `` We , the Subscribers , do agree , that as soon as a convenient Number of Persons have <WSD>subscribed</WSD> to this , or a similar Writing , We will present a petition to the Hon ' ble General Court of the Commonwealth of Massachusetts , praying for an Act incorporating into a Body politic the subscribers to such Writing with Liberty to build such a Bridge , and a Right to demand a Toll equal to that received at Malden Bridge , and on like Terms , and if such an Act shall be obtained , then we severally agree each with the others , that we will hold in the said Bridge the several shares set against our respective Names , the whole into two hundred shares being divided , and that we will pay such sums of Money at such Times and in such Manners , as by the said proposed Corporation , shall be directed and required '' . 
Meaning of the word marked with <WSD> tags:  mark with one's signature; write one's name (on)