HP 35s HP 35s scientific calculator - User Guide - Page 69

Example: In this example, we store 3 in C, 4 in D, and 5 in E. Then we view these variables via the VAR Catalog and clear them as well. This example uses RPN mode. Keys:  ) C D E u Display:     Description: Clear all direct variables Store 3 in C, 4 in D, and 5 in E. Enter the VAR catalog. Note the and annunciators indicating that the Ø and × keys are active to help you scroll through the catalog; however, if Fraction Display mode is active, the and annunciators will not be active to indicate accuracy unless there is only one variable in the catalog. We return to our example, illustrating how to navigate the VAR catalog. Ø  Scroll down to the next direct  variable with non-zero value: D=4. Ø  Scroll down once more to see E=5.  While we are in the VAR catalog, let's extend this example to show you how to clear the value of a variable to zero, effectively deleting the current value. We'll delete E.   E is no longer in the VAR catalog,  as its value is zero. The next variable is C as shown. Suppose now that you wish to copy the value of C to the stack.    The value of C=3 is copied to the x-register and 5 (from defining E=5 previously) moves to the y-register. Storing Data into Variables 3-5