What is "to that effect"

Usage examples of "to that effect".

In a subsequent poem which I have been unable to trace, Mailer wrote that 'So long as you use a knife/There's some love left,' or words to that effect.

A vague suggestion to that effect on which he had once ventured during the time of their sojourn in his house had been received by Cleoné.

But you should stop considering it some particular malice on my part that I succumbed to that effect.

Leavitt's certificate to that effect before I can put your name down, and trust you with books.