int FDIPanel;
ViSession rm;

ViSession vi; 

ViSession FDIOpenSession(ViRsrc FDIname, ViSession rm0);
int FDIWrite(ViSession vi, char command[]);
int FDIRead(ViSession vi, ViPBuf buf);
int FDIReadStatus(ViSession vi, ViPBuf buf);
int FDI_Init(ViSession vi);
int FDI_Corr(ViSession vi);