HelenOS sources

U_PAGE_DOWN       142 kernel/genarch/src/kbrd/kbrd.c 		case U_PAGE_DOWN:
U_PAGE_DOWN       128 kernel/genarch/src/kbrd/scanc_at.c 	U_PAGE_DOWN, /* 0x7a */
U_PAGE_DOWN       224 kernel/genarch/src/kbrd/scanc_at.c 	U_PAGE_DOWN, /* 0x7a */
U_PAGE_DOWN       164 kernel/genarch/src/kbrd/scanc_mac.c 	[0x79] = U_PAGE_DOWN,
U_PAGE_DOWN        81 kernel/genarch/src/kbrd/scanc_pc.c 	U_PAGE_DOWN,    /* 0x51 - Page Down */
U_PAGE_DOWN       171 kernel/genarch/src/kbrd/scanc_pc.c 	U_PAGE_DOWN,    /* 0x51 - Page Down */
U_PAGE_DOWN       166 kernel/genarch/src/kbrd/scanc_sun.c 	[0x7b] = U_PAGE_DOWN,    /* Page Down */
U_PAGE_DOWN       298 kernel/genarch/src/kbrd/scanc_sun.c 	[0x7b] = U_PAGE_DOWN,    /* Page Down */
HelenOS homepage, sources at GitHub