Verb
sign on the dotted line (third-person singular simple present signs on the dotted line, present participle signing on the dotted line, simple past and past participle signed on the dotted line)
(intransitive, idiomatic) To formalize an agreement.
I think they've basically decided to go through with it, but they still have to sign on the dotted line.
The President continues to abjectly sign on the dotted line of any order emanating from the PM’s office without giving it a second thought. Source: Internet
A series of important questions to answer about prospective shows to ensure a good fit before you sign on the dotted line. Source: Internet
Be sure to investigate prices from vendors before you sign on the dotted line. Source: Internet
Don't sign on the dotted line until you get these questions answered. Source: Internet
That’s why it’s important to consider how your bank, insurer, investment company, or KiwiSaver provider will communicate with you before you sign on the dotted line. Source: Internet
However, as things stand, Diesel is yet to sign on the dotted line and make the deal official. Source: Internet