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The addressing of the Public procedure of UNIT means the calling of the procedure of a particular UNIT by the local variable, which represents it. The procedures can be called only from the script that declares the given UNIT.
It is possible to send the identifiers of all objects used in the ESL script that declares the given UNIT to the Public procedures defined within the UNIT - handles of open files, containers, JSON and XML files, transactions and other database operations.
Configuration
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The UNIT is configured in the configuration dialog box in the D2000 CNF. Create UNIT as a new object of EVENT type. When creating, the script editor is opened automatically. There, click the 
Parameters button to open the configuration dialog box. Select the option Unit event on the Parameters tab.
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