y 

n/a 

n 

Required 

_ 

_ 

_ 

gw: 

In a list that can be scrolled, such as a scrollable list box, do not allow the cursor to wrap. 

Required 

_ 

_ 

_ 

gx: 

Provide vertical scroll bars when some of the data is not visible in the combo box. 

Recommended 

_ 

_ 

_ 

gy: 

Provide horizontal scroll bars when elements are wider than the list box. 

Recommended 

_ 

_ 

_ 

gz: 

Display the elements in an order that is meaningful to the user. 

Recommended 

_ 

_ 

_ 

ha: 

Display an initial value from the list in the text-entry field. Display selected emphasis on the initial value so that typed text will replace the value. 

Recommended 

_ 

_ 

_ 

hb: 

Make the combination box large enough to display a minimum of six list items at a time. 

Recommended 

_ 

_ 

_ 

hc: 

When a user increases the size of the window in which the combo box is displayed, increase the number of items displayed in the combo box. 

Recommended 

_ 

_ 

_ 

hd: 

When a user decreases the size of the window in which the combo box is displayed, decrease the number of items displayed in the combo box. As a minimum, reduce the combo box to the text-entry field and a list box with one entry displayed. If the window is sized so that two list items cannot be displayed, clip the combo box.