ABrowse:New(): public: return self
  It fills the object with default initialising values.
  Following predcessor variables are modified:

  ABrowse:CanSwap: override: private: logical
    Default true value from inherited class Browse is overriden to
    new default value false. It restricts switching from Browse to Form.

  ABrowse:InsBlock: override: private: code_block
    Own method of new line input to table for array editation is defined.
    This is because adding items to an array differs from adding records to
    database.

  ABrowse:DelBlock: override: private: code_block
    For array editation defines own method of deleting of table line.