Articulating is to speaking as ___ is to writing [closed]

Solution 1:

Less formal would be putting the words on paper. More formal would be composing a text.

Put on paper¹ means:

Fig. to write something down.
‘You have a great idea for a novel. Now put it on paper. I'm sorry, I can't discuss your offer until I see something in writing. Put it on paper, and then we'll talk.’

Compose² means:

Phrase (a letter or piece of writing) with great care and thought.
‘the first sentence is so hard to compose’

References:

¹ The McGraw-Hill Dictionary of American Idioms and Phrasal Verbs © 2002
² The Oxford Dictionary of English by Angus Stevenson © 2010

Solution 2:

It's still articulating, no matter how it's achieved.

Why can't a mute think of words? Helen Keller was blind, deaf and dumb but she eventually learned to speak (and gave public lectures).

American Sign Language: articulation

Wikipedia: Helen Keller