Articles here are very difficult, so you shold read Lein's Lesson and Overview first.
What's Arka's features?
Phonology and Phonetics
IPA in Kaldia
History of Lunar Alphabet
Etymology of Lunar Letter
About letters and phoneme, cf. hac(2) and lim
For infinitive, gerund and participle, cf. iva.
Sequence of Tenses
Order of Adverb
For honorific, cf.apt, est, leavet and an(7).
Year Time Chronicle
For magic theory, cf. lusia, dolmiyu and seles.