4.1 READ-ONLY MODE
              
For prevention of casual change of the information in databases in
the program presence of two variants of internal modes of protection of files
from write is stipulated.
              
The first variant is a common protection of all files of
databases. Such mode is convenient, when the databases are used only for
reading (using) from them of the information, a not for data input in them. For
turning on and off of this mode is used the item of the Main Menu
"Main Menu -> System -> Read Only".
              
The Second variant blocks from casual write all files of databases
except those, which put in the "List of working files". The list of working
files is set in the item of the Main Menu "Main menu -> System ->List of
working files". In the same time is admitted to have
The sanction to write not more than for two files.