Also take a look on mathematica. It has both a textual and a mathematic representation for everything making it both look good while it cooperates with existing

Also take a look on mathematica. It has both a textual and a mathematic representation for everything making it both look good while it cooperates with existing source control tools. It's a shame more languages aren't designed like this. I would like to call it extreme syntax highlighting rather than extreme syntax. Some might argue that 'sum(myArray)' is both more readable and occupy less vertical space than the mathematical sum-operator but when it comes to skimming through large pieces of code having distinctive characters can really help. Where it really shines is when you are editing large matrices that automatically get aligned. Long mathematical expressions involving division is also a good example, here you get fractionals displayed nicely instead of having to nest everything in paranthesis.