The prefix ortho- means straight; right[-angled]; and also correct. Incidentally, the Hebrew adjective 'yashar' can mean those same three, in this same order of frequency.
-graphy means writing; drawing.
So, is orthography:
- straight writing/drawing
- right[-angled] writing/drawing
- [the?] correct writing/drawing
- ijon is just too naïve, breaking up words like that.
Since you read this far, I give you www.omniglot.com for your trouble.