FileManagerExample

Rules for creating a custom operation:

• each operation can have only one command in its signature;
• a command and modifiers of operation cannot have the same declaration;
• each operation modifier must have a unique declaration;
• the parameters accepted by the operation must necessarily be limited by double quotes (") characters;
• command and modifiers of operation cannot be compound;
• if the operation mask contains a continuous sequence of parameters in which there are required ones, required parameters should go first of the sequence.