Three separate areas of an application subwindow are used in entering characters. These areas are typically displayed, named, and used as follows:
Preedit area--Highlighted (inverse video) entry display
Status area--Lower left corner input conversion mode display
Lookup choice area--Popup displaying multiple character or word choices
The preedit area is a reverse video highlighted area that displays characters as they are entered or converted. It holds formations of characters before they are committed to the application, that is, before they are put in the text block being assembled for the application.
The status area shows what the current input conversion mode is. Several modes are available, as discussed in following sections.
The lookup choice area is a popup that displays multiple Hanja or special character choices available for conversion of character(s) in the preedit area.