Wa alaikum assalam Yahya,
I have humbly argued in the article above and cited again below that noble scribes also committed the Quran to written format
[1]. There would have arguably been no need to commit such a central holy text to bones and leaves in the main, as parchments were known to exist at the time of the prophetic ministry (
qirtas - 6:91) and writing on such material was an ancient practice (87:18-19).
It is noteworthy that the 'written' format was merely a backup of the primary source of revelation which was 'oral'. As noble scribes were committing the text to parchments (80:13-16), there could have been arguably many copies of the Quran being made and disseminated during the time of the prophet's ministry. It is not necessary to assume that only one copy of each verse was being written down at any one time. Copies of copies are just as likely particularly as dissemination may have become necessary as the religion spread far and wide across lands.
Many of the originals may or may not be extant now, as further copies could / would have been made.
As far as diacritical marks are concerned in general, it is useful to remember that these were also aids to reading and correct pronunciation. If one compares two relatively similar scripts today but representing different languages such as Arabic and Urdu, one will note that one conversant with Urdu will require little or no diacritical marks to read a newspaper. They will know how to pronounce the words in context and read the text correctly.
However, an Arabic speaker, also somewhat familiar with the Urdu script reading the same newspaper would arguably struggle to pronounce the words correctly and may require diacritical marks to aid reading / correct pronunciation.
Similarly, an Arabic newspaper does not have many diacritics but is understood by the Arabs. One only needs to compare an Arabic Quran for the 'Arabic speaking community' and one for non-natives to see the emphasis on diacritical marks.
I have assumed the term 'diacritics' generally, albeit it is well known to academics that there are various diacritics including tashkil (which also includes harakat - vowel marks; fathah, dhamma, kasrah, maddah etc) and 'ijam.
I hope this helps, God willing
Joseph
REFERENCE:[1] THE COMPILATION OF THE QURANhttp://quransmessage.com/articles/the%20compilation%20of%20the%20quran%20FM3.htm