| 摘要 |
<p>An information display unit includes a first display control device (31) for displaying a plurality of first button portions (A1-A6) of higher level items of a first menu level (A) in a button display area (R3) . A selective detector (33) detects a selected first button portion (A1, A2) selected among the plural first button portions. A second display control device (32) displays a plurality of second button portions (B1a-B2e) within the selected first button portion in relation to lower level items of a second menu level (B) associated with a higher level item of the selected first button portion. Preferably, the first display control device causes the first button portions to display the higher level items, and the second display control device causes the second button portions to display the lower level items. Also, the second display control device aligns the second button portions within the first button portions.</p> |
