The system variable ⎕TNAME reports and sets the name of the current APL thread. This name is used to identify the thread in the Tracer.
The default value of ⎕TNAME is an empty character vector.
You may set ⎕TNAME to any valid character vector, but it is recommended that control characters (such as ⎕AV[⎕IO] ) be avoided.
⎕TNAME←'Dylan' ⎕TNAME Dylan