One of my favourite things about high school was buying stationery supplies at the start of the year. I was terrible at revising in high school but I loved getting the opportunity to use highlighters. High school was a long time ago and along the way, I grew to hate those fluorescent yellow highlighters. However, all that changed a few years ago when I discovered the Zebra Mildliner.  As you may be able to tell from the name. These are highlighters but not as we know it. I first came across the Zebra Mildliner right around the time I was getting into bullet journaling. Along the way, they have become…