Logo:

  . https://ccl.northwestern.edu/netlogo/ 
     . http://ccl.northwestern.edu/netlogo/docs/dict/create-turtles.html 
 
  . http://www.professorgizzi.org/modelingcomplexity/netlogo/lab_0102.html 
    --> Search for "Try the following statements"
 
Python:

  . http://wrightsolutions.files.wordpress.com/2012/11/dotpathfilerelatedtopython__2012usr_sbin_update-python-modules.jpeg 
 
  . http://i.stack.imgur.com/FCa9W.png 
 
  . http://stsdas.stsci.edu/pyraf/python_quick_tour.html 

Javascript:
 
  . http://hint.fm/wind/ 
 
  . Local link: file:///C:/Users/Thomas/Downloads/wind-bundle.js 
 
  . http://malzilla.sourceforge.net/tutorial06/pic01.jpg 

Java:
 
  . Wikipedia: Java [the island] 

LISP (and friends):
 
  . http://i.stack.imgur.com/hziEL.png 
 
Fortran:
 
  . http://www.fortran.bcs.org/2005/fortran/img13.jpg 

  . Wikipedia: Fortran 

R:

  . Wikipedia: R (programming language) 
 
  . http://inlinedocs.r-forge.r-project.org/inlinedocs-demo.png