Space Indicator R←⎕RSI

R is a vector of refs to the spaces from which functions in the state indicator were called (⍴⎕RSI←→⍴⎕NSI←→⍴⎕SI).

⎕RSI and ⎕NSI are identical except that ⎕RSI returns refs to the spaces whereas ⎕NSI returns their names. Put another way: ⎕NSI←→⍕¨⎕RSI``.

Note that ⎕RSI returns refs to the spaces from which functions were called not those in which they are currently running.

Example

      )OBJECTS
xx      yy

      ⎕VR 'yy.foo'
     ∇ r←foo
[1]    r←⎕SE.goo
     ∇                          
      ⎕VR'⎕SE.goo'
     ∇ r←goo
[1]    r←⎕SI,[1.5]⎕RSI
     ∇

      )CS xx
#.xx
      calling←#.yy.foo
      ]display calling
┌→───────────┐
↓ ┌→──┐      │
│ │goo│ #.yy │
│ └───┘      │
│ ┌→──┐      │
│ │foo│ #.xx │
│ └───┘      │
└∊───────────┘