Commenting

Action	macOS	Windows / Linux	Result
Code | Comment with Line Comment	⌘/	Ctrl+/	Adds or removes // at the start of the current line, or of every selected line
Code | Comment with Block Comment	⌥⌘/	Ctrl+Shift+/	Wraps the selection in /* … */, or removes the block comment around the caret

Both actions toggle: running them again on commented code removes the comment. After Comment with Line Comment the caret moves to the next line, so you can comment several lines in a row by pressing the shortcut repeatedly.

Two selected lines — before

wire a;
wire b;

After Comment with Line Comment

//wire a;
//wire b;

Try it

1. Open rtl/counter.sv from the sample project and put the caret on the line state_t state;.
2. Press ⌘/ (Ctrl+/). // is added at the start of the line and the caret moves to the next line.
3. Move the caret back up to the commented line and press ⌘/ (Ctrl+/) again. The comment is removed.
4. Select the whole assign done = is_done(state); statement and press ⌥⌘/ (Ctrl+Shift+/). It becomes /*assign done = is_done(state);*/. Press it again to remove the block comment.