The DISCLOSUREINDICATOR attribute adds a drill-down decoration to the form item.
DISCLOSUREINDICATOR
The DISCLOSUREINDICATOR attribute is used on BUTTON form items to add a graphical hint, to indicate that a click on the button will drill down in the application windows, typically to show a detail view of the information displayed in the current window.
This is a simple decoration attribute, with no other functional purpose.
For example, on iOS devices, the buttons defined with this attribute will show a typical > icon on the right.
BUTTON b_details : details, TEXT="Show details", DISCLOSUREINDICATOR;