Keyboard button RVYF.
According to relevant information on Baidu Encyclopedia, the word "pad" is entered using the Wubi input method by pressing the RVYF buttons on the keyboard in sequence, where the root of "R" is "扌" and the root of "V" is "Wan" , the root of "Y" is "earth", and the word "F" is the identification code.
Pad: The radical "Zhi" is simplified to "Zhi". Simplify and save strokes based on ancient calligraphy. "Shuowen Jiezi": "Xiaye. "Chunqiu Zhuan" says: pad pass. From the soil, hold on to the sound.". Catching the criminal and avoiding disaster is the paradigm of persistence. The two paradigms of Earth and Zhi are superimposed. Holding the ground to fill the gap is the paradigm of padding. Original meaning: to fill a vacancy.