| 摘要 |
A portable electronic device providing a user-specified input string, comprising: user controls enabling a user to select between at least an up input, a down input, a left input, a right input, and a confirmation input; and a program memory storing instructions configured to implement a method for providing a user-specified input string. The method includes: displaying a string input interface including a string entry section, and at least two independently scrollable character selection sections; accepting user input to sequentially select characters, wherein the up input and the down input are used to select a scrollable character selection section, the left input and the right input are used to scroll through the characters in the selected scrollable character selection section to select a particular character, and the confirmation input is used to add the selected particular character to the input string displayed in the string input section.
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