Specification for miris command generated-output:
In case of unrecognized command:
    ERROR INDICATION: "Unrecognized command"

0. COMMAND: ANY
    ERROR INDICATION: "Format error: " COMMAND_NAME COMMAND OPTIONS

1.  COMMAND: i Ni [Nj Nk ...]
    	 OR
    	 insert Ni [Nj Nk ...]
    COMMENT: insert into the graph structure 1 or more nodes
             with specific INT ids.
    EXPECTED OUTPUT:
    	 "Succ:" Ni Nj ..
    ERROR INDICATION:
    	 "IssueWith:" Nj Nk Nl ..

2.  COMMAND: n Ni Nj sum date
             OR
             insert2 Ni Nj sum date
    COMMENT: introduce an edge with direction from Ni to Nj with label
             sum + date if either Ni or Nj does not exist in the graph,
             do the appropriate node insertion first.
    EXPECTED OUTPUT:
    ERROR INDICATION: "IssueWith:" Ni Nj

3.  COMMAND: d Ni [Nj Nk ...]
             OR
             delete Ni [Nj Nk ...]
    COMMENT: delete from graph listed nodes Ni, Nj, Nk, etc
    EXPECTED OUTPUT:
    ERROR INDICATION:
             "Non-existing node(s):" Ni Nk ..

4.  COMMAND: l Ni Nj
             OR
             delete2 Ni Nj
    COMMENT: remove the edge between Ni and Nj; if there are
	     more than one edges, remove one of the edges.
    EXPECTED OUTPUT:
    ERROR INDICATION:
             "Non-existing node(s):" Ni ..

5.  COMMAND: m Ni Nj sum sum1 date date1
             OR
             m(odify) Ni Nj sum sum1 date date1
    COMMENT: update the values of a specific edge between Ni and Nj
    EXPECTED OUTPUT:
    ERROR INDICATION:
             "Non-existing node(s):" Ni ..
             OR
             "Non-existing edge:" Ni Nj sum date"

6.  COMMAND: f Ni
             OR
             f(ind) Ni
    COMMENT: find all outgoing edges from Ni
    EXPECTED OUTPUT:
             Ni Nj sum1 date1
             Ni Nk sum2 date2
             Ni Nl sum3 date3
             ...
             OR
             (none) // print nothing
    ERROR INDICATION:
             "Non-existing node:" Ni

7.  COMMAND: r Ni
             OR
             receiving Ni
    COMMENT: find all incoming to Ni edges.
    EXPECTED OUTPUT:
             Nj Ni sum1 data1
             Nl Ni sum2 data2
             Nl Ni sum3 data3
             ....
             OR
             (none) // print nothing
    ERROR INDICATION:
             "Non-existing node:" Ni

8.  COMMAND: c Ni
             OR
             circlefind Ni
    COMMENT: find circles Ni is involved in if any
    EXPECTED OUTPUT:
             Ni, Nj, Nk, .., Ni
             Ni, Na, Nb, Nc, ...,Ni
             ....
             OR
             (none) // print nothing
    ERROR INDICATION:
             "Non-existing node:" Ni

9.  COMMAND: fi Ni k
             OR
             findcircles Ni k
    COMMENT: find circular relationships in which Ni is involved and
             moves at least k units of funds.
    EXPECTED OUTPUT:
             Ni, Nj, Nk, .., Ni m      // m min value found (m>=k)
             Ni, Na, Nb, Nc, ...,Ni d  // d min value found (d>=k)
             Ni, Nv, Ni o              // o min value found (o>=k)
             ....
             OR
             (none) // print nothing
    ERROR INDICATION:
            "Non-existing node:" Ni

10. COMMAND: t Ni m
             OR
             traceflow Ni m
    COMMENT: find all paths of length upto m for which a flow of transfers can
             be establsihed from Ni
    EXPECTED OUTPUT:
             Ni, Nj, Nl, Ny
             Ni, Nj, Nv
             Ni, Nj, Nv
             Ni, Na, Nc, Nb, Nx, Ny
             ....
             OR
             (none) // print nothing
    ERROR INDICATION:
            "Non-existing node:" Ni

11. COMMAND: o Ni Nj
             OR
             connected Ni Nj
    COMMENT: If exist, present a path (1) between Ni and Nj
    EXPECTED OUTPUT:
             Ni, No, .., Nm, Nj // connecting path
             OR
             (none) // print nothing
    ERROR INDICATION:
             "Non-existing node:" Ni
             "Non-existing node:" Nj

12. COMMAND: e
             OR
             exit
    COMMENT: terminate the program.
    EXPECTED OUTPUT:
             XYZ "Bytes released"
    ERROR INDICATION:
             (none)