01 Define
Say what you want pulled out.
Pick a ready field list, or start blank. Name the fields you want. For each one, write a short description of what to look for and a typical value. A field can be text, a number, money, a date, yes or no, or a list with columns of its own. You can also say which sums must add up, and switch on options for tables, handwriting, ticked boxes, one row for each page of a PDF, or reading only some pages.