close_all_files — This operator is inoperable. It had the following function:
Close all open files.
close_all_files is obsolete, inoperable, and is only provided for
reasons of backward compatibility. New applications should not use
close_all_files, the operator will be removed in future version.
close_all_files( : : : )
close_all_files exists solely for the purpose of
implementing the “reset program” functionality in HDevelop.
close_all_files must not be used in any application.
If it is possible to close the files the operator
returns the value 2 (H_MSG_TRUE). Otherwise an exception is raised.