clarification

Rewritten-docs.md

@@ -720,6 +720,8 @@ frontend.
 @todo describe overriding of default (per worker) limits and that we cannot 
 relax them
 @todo state clearly that the limits on stdout, stderr and file IO are shared 
+(but if outputs are ignored (not redirected to a file), the program can use them 
+at will)
 
 ```{.yml}
 - task-id: "execution_1"