NB: More recent documentation for Dyalog APL is available at https://docs.dyalog.com/20.0/.
Monadic ⎕DR means
A←10
⎕DR A
83
Dyadic ⎕DR means
A←10
11 ⎕DR A
0 0 0 0 1 0 1 0
NB: More recent documentation for Dyalog APL is available at https://docs.dyalog.com/20.0/.
A←10
⎕DR A
83
A←10
11 ⎕DR A
0 0 0 0 1 0 1 0