removing display objects from memory without inserting in self.view

Solar2D Composer
#81

I believe I found a solution, let me know if this is proper Coronaese/Coronese:

First, within linedraw.lua, I create a display group (to hold all objects for linedraw.lua) and attach it to the LD table:

--linedraw.lua--  
  
local LD = {}  
...  
local function startListener()  
 print("starting listener...")  
 Runtime:addEventListener("touch", drawDots)  
---Create display group:  
 LD.linedrawgroup = display.newGroup()  
end  
...  
return LD

Then…

I pull said group into my level1.lua and localize it, like so! :

--level1.lua  
  
--Import display group from linedraw.lua and localize:  
  
local LDgroup = LD.linedrawgroup

Bonus:
…and then all I have to do for easy clean up, is put said group into a master group within level1.lua!
[import]uid: 73951 topic_id: 35817 reply_id: 144930[/import]