I try to find any term that can specify a descriptive field of study that is interested in language notation. It should contain parts of written text (general text form - not only handwritten): characters, words, sentences… in opposite to phonetics that contains parts of spoken language: phones, consonants, vowels, syllables…
Is there any single term that can specify the first mentioned field of study?
It is not graphology, because my field of study is a general text (not only handwritten).
Maybe the closest term is lexicology, however, I am not sure whether it fits, because lexicology in my point of view does not care about sentences and characters itself.
It is also close to orthography, but language correctness is not a case of my study.
I have read about term text linguistics, but it seems to be reserved for larger structures.
I also do not care about semantics, etymology or any historical relations, just parts of the written text within my NLP app.