Form, or sms input area, or... anything you put text... http://patterns.design4mobile.com/index.php/Text_Entr -- NOT a select list, as the entry is free-form
Pretty sure that (now dead) link was from... someone else. CEO? Look in email for the discussion and go look at the blog entry of whoever did it.
cursor and focus...
enter is a linefeed on multi-line, submits forms or exits the field on single line
notes about input method and reference
field hints in the field, adjacent to the field, pros and cons of each