Problems "Top-level" plugin

[yxcvbnm]

1. nav-tab

The createNavTab function was created originally for the plugins tab and was not meant for general use as top level
nav for plugins.

hm... then, i've got 2 questions:

• but why is the action nav-tab documented if it should not be used? see http://get-simple.info/plugin-codex
  
• what's the meaning of such a function like createNavTab() - only to render the Plugins tab? you could use the core tab creation function for that, right? (i think, there's one ?!
  

2. top-level plugin
hm... ok, if i choose to use the plugins the original way (not as top level nav, but as second level sidebar menu item), it seems to work well.