Someone please explain node parentage?

a node is an object inside the 3D world.

to set a parent enter an event on the child and choose set parent - enter the parents fixed value. the child will now always do what its parent does - if its parent moves to 0,0,0 it will move to 0,0,0 if its parent rotates to 0,0,90 then it will rotate to 0,0,90

the co ordinates - can be relative to anything.. eg - the center of a 640x480 frame is x=320, y=240 - the 3D co ordinates can be exactly the same if you like. its all relative to where the camera IS and where its pointing TO (target)

3d has 3 co ordinates x,y,z ( if you were to imagine your 2d frame area laid down flat in a 3d world (eg a top down racing game etc) - the "ground" axis are the X and Z, Y being up and down. therefore 2d X,Y would be the 3d's X,Z. you can position something from your frame X pos, to the 3d worlds X co ordinate, and the frames Y pos to the 3d worlds Z co ordinate.

on most nodes there is a Transpose option, this allows you to tell Firefly to automatically move the node in 3d if its moved in 2d. it currently has 7 options (an 8th is due in the next update)

"No Transposition", this will not move the node automatically (default)
"Transpose 2dx -> 3dx, 2dy -> 3dy ", this will take the 2D x value and put it into the 3D x value and take the 2D y value and put it in the 3D y value.
"Transpose 2dx -> 3dx, 2dy -> 3dz ", this will take the 2D x value and put it into the 3D x value and take the 2D y value and put it in the 3D z value.
"Transpose 2dx -> 3dy, 2dy -> 3dx ", this will take the 2D x value and put it into the 3D y value and take the 2D y value and put it in the 3D x value.
"Transpose 2dx -> 3dy, 2dy -> 3dz ", this will take the 2D x value and put it into the 3D y value and take the 2D y value and put it in the 3D z value.
"Transpose 2dx -> 3dz, 2dy -> 3dx ", this will take the 2D x value and put it into the 3D z value and take the 2D y value and put it in the 3D x value.
"Transpose 2dx -> 3dz, 2dy -> 3dy ", this will take the 2D x value and put it into the 3D z value and take the 2D y value and put it in the 3D y value.
"Transpose 2dx -> 3dx, 2dy(i) -> 3dz ", this will take the 2D x value and put it into the 3D x value and take the 2D y value and invert it and put it in the 3D z value. (this will cause a y value of say 34 to become -34 before its placed into 3D z value)

so to answer your question - how the 2d position affects its place in the 3d world is completely upto you.

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* 3D grid to 2D grid.

- not sure what this would do or look like ?

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* Zero coordinate object

- im confused also why you would need an object you couldnt move ? you already have one just dont move it.

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* Extend primitives faces in any direction.

- this would be vertex manipulation which firefly doesn't do yet

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* Import blender game levels and execute their movements.

as explained earlier a lot of work for little to no reward

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* Link materials and meshes through properties.

materials and meshes are already handled through properties ?

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* Link parents and children through properties.

parents only happen during runtime so noway to link them during edit time when they are not linked ?

not meaning to sound harsh but i'm failing to see what some of those features would add.

yeah the blender thing is just so inappropriate. just why not stick with blender!?