The number of columns that are added to the group column and opened in the bBrowser.
bGroupColumn:ColumnOpenCount returns the number of columns that are added to the group column and opened in the bBrowser. If the group column contains other group columns then the columns of those groups are counted in the number.
The columns opened in the browser can be determined with the method bGroupColumn:GetColumnList().
Page url: http://www.YOURSERVER.com/index.html?bgroupcolumn_columnopencount.htm