openColumnGroup

expands matching column group(s)

void openColumnGroup(number|array columnId,string page);

columnId	number\|array	optional, a column ID or a range of column IDs [start, end]
page	string	optional, a page name

$$("ssheet").openColumnGroup();

Details

Attempts to prioritize valid groups at the highest available level (the most nested).

If the columnId parameter isn't specified, the method expands the group for the selected column(s).