For example, when the "B" key is pressed, returning to the previous page is done as follows.

1. Select "Option -> Setup Parameters... -> [Key]".

2. Select "Previous Page" in the Function: box. Selection "B" in the Key: box. Press [Define].

3. Press [Apply] to adapt to the current session.

4. Press [Save] to save to the Registry. The definitions become the defaults in subsequent uses.
In the [REGISTRY] sheet, check the parameters with + added at the beginning of the key items in the list box. (If they are not marked, use the [Auto Load] key to add + and press the [Save] in [REGISTRY] key.)

Note: Since the keys are distinguished by uppercase and lowercase letters, to assign the same function to "b" after performing 2 above, select "b" in the Key: box and press "Define."

In 3 and 4 above, defining or changing all of the key functions may be executed only once.

It is similar to define a function on some tool buttons(cf. [Key], Q_O4, Q_V10).