The IDE makes it easy to comment out large sections of code. You can quickly add // characters to the beginning of lines, letting you comment out large sections, even if they have /* */ comments. When you uncomment lines, the IDE removes the leading // characters from all lines that have them, so be careful not to accidentally uncomment sections. Also, the IDE comments or uncomments the selected lines; if you select a partial line, the IDE comments out the entire line, not just the highlighted section of code.