## An example command file containing the following command:

TOTALITEM
CHECKOUT  Book "Introduction to AI" "QA123" 10000
CHECKOUT  Book "Da Venci Code" "N456" 10020
RECALL    Book "Da Venci Code" "N456" 10027
PRINTLIST Book
CHECKOUT  Periodical "Machine Learning" "1 2003" 10030
TOTALITEM
FINE      10030
RENEW     Book "Da Venci Code" "N456" 10030 
RENEW Periodical "Machine Learning" "1 2003" 10037
CHECKOUT Periodical "Science" "1 2004" 10037
PRINTLIST Periodical 
RENEW Periodical "Machine Learning" "1 2003" 10040


## The sample output from this command file should look like the following.

Cmd: TOTALITEM
     0

Cmd: CHECKOUT Book "Introduction to AI" "QA123" 10000

Cmd: CHECKOUT Book "Da Venci Code" "N456" 10020

Cmd: RECALL  Book "Da Venci Code" "N456" 10027

Cmd: PRINTLIST Book
     Title                Call Number    Recall Status Renew Count Due Date  
     Introduction to AI   QA123          false         0           10028
     Da Venci Code        N456           true          0           10034

Cmd: CHECKOUT Periodical "Machine Learning" "1 2003" 10030

Cmd: TOTALITEM
     3

Cmd: FINE 10030
     $0.20
     Overdue Items
     Book        
     Title                Call Number           Days Overdue 
     Introduction to AI   QA123                 2

Cmd: RENEW Book "Da Venci Code" "N456" 10030
     The item is been recalled and cannot be renewed.

Cmd: RENEW Periodical "Machine Learning" "1 2003" 10037

Cmd: CHECHOUT Periodical "Science" "1 2004" 10037

Cmd: PRINTLIST Periodical
     Title                Volume Number  Recall Status Renew Count Due Date  
     Machine Learning     1 2003         false         1           10044
     Science              1 2004         false         0           10044

Cmd: RENEW Periodical "Machine Learning" "1 2003" 10040
     The item cannot be renewed because you have exceeded the limit for the 
     number of renewals allowed for this item.


#######
NOTE-1: each string value is included in a pair of quotation markers ("...")
        in any command it appears, but not when appearing in any print out.
NOTE-2: Each command (including all its parameters) shall be echoed in the 
        output. There should be a blank line between outputs of two consecutive 
        commands.
NOTE-3: outputs for PRINTLIS and FINE are different. You may need a private 
        print function in PatronRecord for FINE.