(a.) Such as can be read; legible; fit or suitable to be read; worth reading; interesting.

absorbing allegorical apprehensible articulate associational cognizable comprehensible connotational connotative decipherable definable denotational denotative distinct easily understood easy to understand engaging enjoyable entertaining exciting exoteric expressive extended extensional fair fathomable figurative full of meaning full of point full of substance in the clear indicative intelligible intensional interesting interpretable inviting juicy knowable legible lively meaning meaningful meaty metaphorical penetrable piquant pithy plain pleasurable plumbable pointed pregnant prehensible provocative provoking racy referential rich scrutable sententious significant significative spicy stimulating substantial succulent suggestive symbolic tantalizing thought-challenging thought-inspiring thought-provoking tickling titillating transferred uncoded understandable unenciphered worthwhile