Knit into the front and back of every stitch

I’m working on a pattern and it tells me to knit into the front and back of every stitch, I don’t really understand how is that suppose to be done, does anyone have an example of how is this suppose to be done?

Thanks

Liya

Here’s video!

On this page: http://www.knittinghelp.com/knitting/basic_techniques/increase.php , about half way down, called a ‘Bar Increase’.

Good luck!