Output variants for pick and index operators

[Hans-Peter Sorge]

    Hi Jürgen,
    
    looks like I have plenty of time,
    however, it's being usefully invested:-)
    
    (SVN 1660)
    
    This displays as expected.
        X (8⎕CR  X ←1 2 3
        ⊃¨⊂'A' 'CD' 'EF')
      
       A CD EF   ┌→──────────┐  
                 │A ┌→─┐ ┌→─┐│  
                 │  │CD│ │EF││  
                 │  └──┘ └──┘│  
                 └ϵ──────────┘  
      
      A..CD  OK, CD...EF one space more.
            X
        (8⎕CR  X ←1 2 3 ⌷¨⊂'A' 'CD' 'EF')
      
       A  CD   EF    ┌→──────────────┐  
                     │A ┌────┐ ┌────┐│  
                     │  │┌→─┐│ │┌→─┐││  
                     │  ││CD││ ││EF│││  
                     │  │└──┘│ │└──┘││  
                     │  └ϵ───┘ └ϵ───┘│  
                     └ϵϵ─────────────┘ 
      
    
    In Ref to "V" from previous
      conversations ...
      
      Display for "⊃" and "⌷" differ, the bare outputs are identical. 
            X
        (8⎕CR  X ←1 2 3 ⊃¨⊂V)             
       A  1 2 3 4 5   0 0 0   ┌→────────────────────┐  
                      0 0 0   │A ┌→────────┐ ┌→────┐│  
                      0 0 0   │  │1 2 3 4 5│ ↓0 0 0││  
                              │  └─────────┘ │0 0 0││  
                              │              │0 0 0││  
                              │              └─────┘│  
                              └ϵ────────────────────┘  
      Same layout as before
            X
        (8⎕CR  X ←1 2 3 ⌷¨⊂V)
      
       A  1 2 3 4 5   0 0 0    ┌→────────────────────────┐  
                      0 0 0    │A ┌───────────┐ ┌───────┐│  
                      0 0 0    │  │┌→────────┐│ │┌→────┐││  
                               │  ││1 2 3 4 5││ │↓0 0 0│││  
                               │  │└─────────┘│ ││0 0 0│││  
                               │  └ϵ──────────┘ ││0 0 0│││  
                               │                │└─────┘││  
                               │                └ϵ──────┘│  
                               └ϵϵ───────────────────────┘
      
      As a side note. 
      The output has trailing space(s) included
      3 spaces EF...1  OK? Should be 2 spaces?
         X ←1 2 3
        ⊃¨⊂'A' 'CD' 'EF'
      
            X 1
      
       A CD EF   1  
    
    4 spaces EF....1 OK? Should be 2
        spaces?
           
        X ←1 2 3 ⌷¨⊂'A' 'CD' 'EF'
      
            X 1
      
       A  CD   EF    1 
      
      Best Regards
      Hans-Peter