 if \`command\` comes from trused source.
    poStdErrToStdOut,               ## merge stdout and stderr to the stdout stream
    poParentStreams                 ## use the streams of parent
~~~

## Procs

### :inputHandle
~~~nim
proc inputHandle(p: Process) : FileHandle {.gcsafe, extern: "nosp$1", tags: [], raises: [].}
     ## 返回进程的输入文件表示，用来写入。警告：返回的 TFileHandle 不应手动关闭，因为当进程关闭时会跟随关闭。
~~~     

### :outputHandle
~~~
pro