record (stringout, "$(P):cmd")
{
    field (DTYP, "stream")
    field (OUT,  "@simple.proto cmd $(BUS)")
}
record (stringout, "$(P):info")
{
    field (DTYP, "stream")
    field (OUT,  "@simple.proto info $(BUS)")
}
record (stringin, "$(P):read")
{
    field (DTYP, "stream")
    field (INP,  "@simple.proto read $(BUS)")
}