... to a not inconsiderable extent on the size of the type, the length of the lines and the leading. Gutenberg sets the baseline grid to establish a proper vertical rhythm and makes sure all elements fit into it. It sets up the macro typography so you can focus on the micro–typographic details. All calculations in Gutenberg depend on base type size and line-height. Multiplication of these two results in leading which is essential for setting a correct vertical rhythm and a baseline grid.