⎕R Carriage Return

The niladic system function ⎕R returns a Carriage Return character (with Line Feed), also known as a New Line character. On output, it has the effect of moving the cursor to the start of the next line, so it is commonly used as a line separator in text vectors.

             ⎕A,⎕R,⎕D
       ABCDEFGHIJKLMNOPQRSTUVWXYZ
       0123456789

             ⎕AF ⎕R
       13

⎕R is the same as ⎕TCNL or ⎕TC[⎕IO+1]. See ⎕TC and ⎕TCxx.