(a)
unofficial files placement: see http://www.ldraw.org/article/14.html
usually, unofficial parts should go into ldraw/unofficial/parts,
unofficial subparts should go into ldraw/unofficial/parts/s
unofficial primitives should go into ldraw/unofficial/p
or its subfolder "8" or "48"
(b)
inlining of subparts is not necessary. you should instead save your model as an mpd file.
MPD is simply a container file containing 1 or more LDR files.
thus, you can put all required unofficial files inside that file.
I usually use mpdwizard for this purpose. It scans my folders and puts all necessary unofficial files
into a single MPD, together with the original LDR model using it.
The good thing about that tool is that only UNOFFICIAL files get put into the MPD, all official ones are NOT.
I attach the tool to this post, as I was not able to find a download link anymore for it.
Rename it from *.zip.txt to *.zip, unpack it, you'll get MPDWizard.exe for Windows.
I cannot remember where I got it from some years ago. Maybe also some newer tool for that purpose exists.
unofficial files placement: see http://www.ldraw.org/article/14.html
usually, unofficial parts should go into ldraw/unofficial/parts,
unofficial subparts should go into ldraw/unofficial/parts/s
unofficial primitives should go into ldraw/unofficial/p
or its subfolder "8" or "48"
(b)
inlining of subparts is not necessary. you should instead save your model as an mpd file.
MPD is simply a container file containing 1 or more LDR files.
thus, you can put all required unofficial files inside that file.
I usually use mpdwizard for this purpose. It scans my folders and puts all necessary unofficial files
into a single MPD, together with the original LDR model using it.
The good thing about that tool is that only UNOFFICIAL files get put into the MPD, all official ones are NOT.
I attach the tool to this post, as I was not able to find a download link anymore for it.
Rename it from *.zip.txt to *.zip, unpack it, you'll get MPDWizard.exe for Windows.
I cannot remember where I got it from some years ago. Maybe also some newer tool for that purpose exists.