Which of the following is not done by modern IDE editors to help the programmer?

A) Left indents all code
B) Provides auto-completion of code
C) Applies color to comments
D) Align sections of code appropriately

Modern IDE editors do not automatically left indent all code as a standard operation. They provide features like auto-completion, coloring comments for readability, and aligning sections of code to improve readability and maintainability, but they typically allow the programmer to configure indentation preferences rather than enforcing a specific style like left indenting all code.