I'm programming a TI-83 and I'm still new to programming in general. I'm having a trouble with the line : DelVar L₁"?→Str1 I was wondering if someone could tell me where to find ₁ in particular.

Last year, while cleaning out the basement of my childhood home, I discovered a plastic storage bin marked "Calcusoft." Inside were piles of notebooks filled with sketches, storyboards, and lines of ...