This is documentation for Mathematica 3, which was
based on an earlier version of the Wolfram Language.
 Fractions How to type Start with the expression that will be the numerator. Type x Create a built-up fraction by pressing the Control and Slash keys at the same time. The placeholder in the denominator is already selected. Press / Fill in the denominator. Type y Move the insertion point out of the fraction by pressing the Control key and the Space bar at the same time. Press How to type Repeat the steps of the first example. Type x, press /, type y, press Once the insertion point is out of the fraction you can continue typing. Type +z How to type Do the first few steps of the previous example. Type x, press /, type y Continue typing in the denominator and then come out of the fraction. Type +z, press / How to type Create a built-up fraction with Control-Slash. The numerator and denominator contain placeholders; the one in the numerator is selected. Press / Type an expression in the numerator. Type x+y Select the placeholder in the denominator by the pressing the Tab key. (Alternatively, you can select the placeholder by clicking it or dragging.) Press Fill in the numerator and get out of the fraction with Control-Space. Type z, press Another way to type Start with the expression that will be the numerator. Type x+y Select the expression. (You can select by dragging, by pressing Control-Dot repeatedly, or by clicking the expression repeatedly.) Select it Create a built-up fraction by pressing Control-Slash. Press Fill in the numerator and get out of the fraction with Control-Space. Type z, press