I'm not sure what you mean. Do you want to use a line instead of box for the field? If that's the case we do not support that.
With all due respect, you should support that. Not having this option in renders FormsCentral pretty much unusable for my organization. Boxed fields are not appropriate for printed forms. Underlined fields are an option when creating a form from an existing document, so why not when creating a new form in FormsCentral? At best, this is an oversight. Or, it is part of an attempt to force me to purchase a Livecycle Designer license, which sadly is no longer included with Acrobat. If this is indeed the case, then you should know that (pay attention, texas001) the tedious but less expensive workaround to this is to:
1. Create a form in FormsCentral;
2. Save theFormsCentral form as PDF form;
2. Print the new PDF form to PDF (yes, print the PDF to PDF);
3. Create a form based on the printed PDF;
4. Format fields as underlines instead of outlines.
Regardless of the reason, Adobe has succeeded in a) devaluing Acrobat, and b) inconveniencing its non-power users. Poorly done.
Technical Documentation Specialist
Climax Portable Machining and Welding Systems, Inc.