XCB_XF86VIDMODE_MODE_FLAG_NEGATIVE_H_SYNC

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
extern (C)
alias XCB_XF86VIDMODE_MODE_FLAG_NEGATIVE_H_SYNC = xcb_xf86vidmode_mode_flag_t.XCB_XF86VIDMODE_MODE_FLAG_NEGATIVE_H_SYNC

Meta