GPD P2 MAX - Arrow and Special Key Functions

d to press the Fn/Ctrl at the same time.
 PgUp、Home、PgDn、End 与 、、、 重叠，默认输出为 、、、
，同时按下 Fn 键切换为 PgUp、Home、PgDn、End 状态。
PgUp/Home/PgDn/End and     buttons overlap, the default output is   
, press the Fn button to switch to PgUp/Home/PgDn/End modes.