The scholars have different opinions regarding what the Huroof Muqattat mean. There is nothing from Allah SWT or Prophet Muhammad [pbuh] that clearly and openly explain what these letters mean, so what we are left with is different opinions, which may be correct or may not. What we know without doubt is that these letters are from Allah SWT and we accept them as part of the Quran and their full meaning is with Him
Totally agree with Midnight on this