I read a recipe for pizza dough that calls for 00 flour. what is 00 flour? can i just use all purpose?

I always use regular all purpose flour or bread flour for my pizza crust but thats what my recipe calls for.
Im not sure what 00 flour is. Probably pastry flour or something.

Garlic Lover's Pizza Crust for the Bread Machine

INGREDIENTS:
6 fluid ounces lukewarm water
2 tablespoons olive oil
3 cloves garlic, minced
2 cups bread flour
1 teaspoon white sugar
1/2 teaspoon salt
2 teaspoons active dry yeast

DIRECTIONS:
1.Place the ingredients into the pan of a bread machine in the order recommended by the manufacturer. Close the lid, select the Dough cycle, and press Start.
2.When the machine signals the end of the cycle, remove the dough and knead into a tight ball on a lightly floured surface. Let rest for about 15 minutes.
3.Preheat the oven to 400 degrees F (200 degrees C). Stretch the dough out to fit your desired pizza pan. Let rise for about 20 minutes for a thicker crust.
4.Top with sauce, cheese and desired pizza toppings. Bake for 10 to 20 minutes in the preheated oven, or until the crust is lightly browned on the bottom when you lift up to take a peek.

I dont have a bread machine or a mixer with a dough hook..can i just use my processor or mix everything by hand? although i do imagine it'll get a little messy if i have to hand mix it.

00 Flour is a European designation, Triple C. In France and Italy, in particular, they have a whole range of flours identified numerically based on the protein content.

In the U.S. we have only three general classifications. Cake flour, which is a low protein (i.e., low gluten) flour made from soft wheat. Bread flour, which is a high protein flour made from hard wheat. And All-Purpose, which is a combination of the two.

There are other special purpose flours, but they're not generally available.

For pizza either All Purpose or Bread Flour will work, as you want some gluten development.

thank you ky for that thorough explanation..i always appreciate in depth knowledge on anything!