Hidden ranges

// ----------------------------------------------------------------------------
//                           H I D D E N  A R E A S
// ----------------------------------------------------------------------------

// Hidden ranges - address ranges which can be replaced by their descriptions

// hide a range
//       start, end  - range boundaries
//       description - description to display if the range is collapsed
//       header      - header lines to display if the range is expanded
//       footer      - footer lines to display if the range is expanded
//       visible     - the range state
//       color       - RGB color code (-1 means default color)
//  returns: !=0 - ok

success add_hidden_range(long start, long end, string description, string header, string footer, long color);

// set hidden range state
//       ea      - any address belonging to the hidden range
//       visible - new state of the range
//  returns: !=0 - ok

success update_hidden_range(long ea, long visible);

// delete a hidden range
//       ea - any address belonging to the hidden range
//  returns: !=0 - ok

success del_hidden_range(long ea);