I think you are talking about information that you, or the web site, places on the web page. But without more information, we can't say much more.

What is the web site, address? What information are you asking about? Are you trying to changing, remove the information? Anything else?

Thanks Fred. I have figured it out. Those little pests where info entries put there by Firefox as they tracked my surfing. Just like google. I deleted them and no problems.

Firefox uses cookies to save information about web sites you were at, and history to record where you have been. Are you talking about something else?

Use these steps to remove saved (form) data from a drop-down list:

1. click the (empty) input field on the web page to open the drop-down list
2. highlight an entry in the drop-down list with the mouse or cursor Down key
   do not click the mouse or press the Enter key
3. press the Delete key (on Mac: Shift+Delete) to delete the highlighted entry

See also:

• https://support.mozilla.org/kb/Search+suggestions