From Ivory to Metal (Concatenative Programming) (2017)

I see LOGO also as a kind of (lispy, interactive, left to right!) concatenative langugage. Here is an example, an ASCII christmass tree we made with the kid recently:

    ?  tanne.print tanne.output tanne.shift tanne.split 19 3 3 
             x
            xxx
           xxxx*
          oOOOx
           OxO
          ~oxoOox
         ~~o*o**O
        *o~*~x*OO
       x~Ox*x~~xOx*
        *~ox*x*O*O
       xO~ox~~*~
      oxoxxox~~xx**
     *O*o~OOo~*o**
    ~xOxOx~x*o*x*O
    

just putting something in between:

    ? tanne.print butlast tanne.output tanne.shift tanne.split 19 3 3 
          
         x*
        xxO*
       x*o*Oo
        oo*x
       o~ox~*x
      xOoOOOx*
     **o*xoo
    o***OO**x~