Show-Sel-Always
When this style is set, the current item is highlighted even if the Tree-View control is not the current control. 
When this style is not set, there is no way to distinguish the current item if the Tree-View control is not the current control. This is the default setting.
 
Example - Define a tree-view with show-sel-always style
... screen section. ...   03 screen-1-tv-1 Tree-View      line 2.7      column 3.4      size 20.8 cells       lines 29.1 cells       height-in-cells      color 144      id 2      show-sel-always      show-lines      .  |