General Guidelines for the User Interface

The Rainfall-Runoff Model has been implemented under MS-Access 2000; where possible, a common "look and feel" has been achieved. The user-interface is through programmed windows called "forms". In General, navigation (i.e. movement from one form to another) is through

various Buttons
with a symbol (icon) or text
and, more rarely, through page tabs

Options are selected through

Radio-buttons
(only one of several options can be selected)
checkboxes
(several options can be selected simultaneously)
list fields
to scroll up and down
and
combination fields (pull-down menus)

Buttons are not only used for navigation (i.e. to move to another form) but also to execute a command. A single click is required to execute the command behind the button. The look and feel of buttons have been standardised:

Help-button
various
Execute-buttons
Exit-button
Buttons may be active
or non-active, which means, that they can not be clicked