I recently needed to do a "load from scene" on quite a large existing scene, but then have everything offset by some distance. On a smaller scene, I would normally just parent everything to a null, save the scene out as something like "My_Scene_with_Null" and then use load from scene to bring it in again.
However, parenting dozens of objects and lights seemed like an awful lot of work, so I went online to find a "parent-scene" plugin.
I was quite surprised not to find one, so thought I'd do it myself, and here it is.
Running the plugin (actually, it's a compiled lscript) brings up the following:

It's fairly self-explanatory - name the null, choose what you want parented, and hit OK.
The scene is saved with the name of the null appended, so "My_Scene.lws" becomes "My_Scene_Master_NULL.lws" or whatever.
Note that because the scene has been saved, it is now the current scene.
Version 1.1 - 27 October 2005 - Now returns an error if a null with the chosen name already exists.
Click the link to download: Scene-Parent.zip
| (c) Simon Coombs | Created: 27 October 2005 |