How does “Reading the form and placing the values” work on the Form Fill page?

An uploaded form is read twice: first for its blanks — the fields, boxes, underlined leaders and empty cells — and then for the values. Placement follows the drawn lines and cells of the PDF, not only its text, so a value lands in the box it belongs to rather than near a label. Each proposed value carries the verbatim evidence it came from, and a blank nothing supports is left empty rather than guessed. On the review screen the form is shown at print size with the values laid over it: drag or resize a box, change a value, delete one, then download or send for signature. Where: Form Fill (/accounts/form-fill).