Comment and Uncomment Block

You can comment out all lines in selected text using the Comment Block icon. The complementary icon Uncomment Block removes the comment characters ("--" for VHDL and "//" for Verilog) from all lines in the selected text. Another way of commenting is by using Ctrl+K on your keyboard or Edit | Block | Comment from main menu. Similarly, to uncomment the selected section, choose Ctrl+Shift+K or Edit | Block | Uncomment.