Cream sugar and shortening. Add eggs and vanilla-mix well. Sift flour, baking powder and salt. Combine with shortening mixture. Knead dough until it can be rolled out on a floured board. Roll about 1/8 inch thick, cut out and place cut 'cookies' on ungreased sheet pans/cookie sheets and bake until edges are just golden. (About 10-12 minutes) Middle of cookie should be fairly light. The longer baked, and the browner the cookie, the crisper it will be.