added more precise description for some details

klemens-morgenstern · Oct 28, 2016 · f70a609 · f70a609
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diff --git a/doc/design.qbk b/doc/design.qbk
@@ -85,7 +85,8 @@ child c("ls", on_setup([](){cout << "On Setup" << endl;});
 ```
 
 
-[note On posix all those callbacks will be handles by this process, not the created one.]
+[note On posix all those callbacks will be handled by this process, not the created one. 
+This is different for the posix extensions, which can be executed on the forked process.]
 [endsect]
 
 [endsect] 
diff --git a/doc/tutorial.qbk b/doc/tutorial.qbk
@@ -144,7 +144,13 @@ bp::system c("g++", "main.cpp", ec);
 [section:io Synchronous I/O]
 
 In the examples given above, we have only started a program, but did not consider the output. 
-The default depends on the system, but usually this will just write it to the output of the launching process.
+The default depends on the system, but usually this will just write it to the same output as the launching process.
+If this shall be guaranteed, the streams can be explicitly forwarded like this.
+
+```
+   bp::system("g++", bp::std_out > stdout, bp::std_err > stderr, bp::stdin < stdin);
+``` 
+
 Now for the first example, we might want to just ignore the output, which can be done by redirecting it to the null-device.
 This can be achieved this way: