How to cut thru - cut all the other sides on the view - with knife tool

Making a non-linear cut:

1. Select the knife tool by pressing K.
2. Click on the point where your cut will start.
3. Press on C before making the second click where the cut will end or continue.
4. After clicking on where the cut should end, you should confirm the cut with enter key.

This will result with a cut that will go thru on the other side of the view and cut it completely on the view.

Making a straight-cut like this:

1. Select the knife tool by pressing K.
2. Start the cut and then press on A to set it as a straight cut.
3. Then again, press on C before making the second click.
4. Finally, confirm the cut by pressing enter.

The example above will cut thru a straight line on the view.