Such "mark-up" of the Draft. The standard method the County uses to acquire goods or services is the Invitation to Bid process.Use of pencil is prohibited. When filling out the bid proposal form, bidders are required to complete bid proposal in ink. 1. Use of pencil is prohibited. 2. Vendor Information Sheet (please complete) (Mandatory) e. ERASURES OR CORRECTIONS: When filling out the Bid Proposal Form, bidders are required to use a typewriter or complete bid proposal in ink.