Information Product and Method for Interacting with User

A computer program product, configured to be loaded by a computer to enable the computer to perform a method for displaying tree structure data, wherein the tree structure data comprises a node item and a sub-item belong to the node item, the method comprises:

• displaying at least one portion of an item line including the sub-item and a tag item on a screen;
• moving the tag item;
• and
• displaying the name of the node item, when the tag item is next to the sub item.

A hand-held electronic device, comprising:

• a menu providing module, used to provide tree structure data, wherein the tree structure data comprises a node item and a sub-item belong to the node item;
• a tag providing module, used to provide a tag item and move the tag item;
• an input module, used to be inputted a control signal by a user to control the tag providing module, wherein the tag providing module moves the tag item in accordance with the control signal;
• and
• a display module, used to display at least one portion of an item line comprising the node item and the sub-item on a screen;
• wherein the screen displays the name of the node item when the user moves the tag item to an area next to the sub-item.