The builder
- Drag fields in, drag them around, and see the form the way a responder will as you go.
- Four field widths on a four-column grid, so two halves always meet exactly.
- Show-if rules on any field, matched against any earlier answer, with the same engine running in the browser and on the server.
- Page breaks turn a long form into steps with a progress bar.
- Every publish snapshots the definition, so a response can always be read against the form it was actually answered on.