This page introduces the meaning of following environment variables. You don't need to understand it to use Fcitx, but it might help when you meet some problem, and let you examine what's going wrong. XMODIFIERS This variable affects XIM only. The format is XMODIFIERS=@im=<xim server name> When XIM server starts, it register a name, which will be used here. The name can not be same as other XIM se