put in writing

His friend and literary executor, Max Brod, had been entrusted to burn all of Kafka’s letters and manuscripts after his death — a wish Kafka put in writing, even though Brod told him he wouldn’t do it.

“On my way out, I want to put in writing what I think this program is, to give it a little more shape,” she says.

It must also put in writing that the delegation is in effect and once that delegation has ended.

Ellison testified earlier in the trial that Bankman-Fried directed employees to "be careful with what we put in writing, and not put into writing something that could get us into legal trouble."

Presidents have the ultimate authority to classify and declassify documents, though this is typically put in writing and done through established channels.