Hint

This property allows you to define the text shown in the window that pops up when the mouse pointer is placed on the Combo-Box control.

 

Example - Create a combo-box in screen section with hint text

screen section. ... 03 screen-1-co-1 Combo-Box    line 19.0    column 23.0    size 12.0 cells     lines 11.0    id 13    hint "Select color here"    3-d    drop-down    .