HelenOS sources

U_PAGE_DOWN        60 common/include/str.h #define U_PAGE_DOWN    0x21df
U_PAGE_DOWN        60 kernel/generic/common/include/str.h #define U_PAGE_DOWN    0x21df
U_PAGE_DOWN        60 uspace/lib/c/common/include/str.h #define U_PAGE_DOWN    0x21df
U_PAGE_DOWN        60 uspace/lib/posix/include/common/str.h #define U_PAGE_DOWN    0x21df
HelenOS homepage, sources at GitHub