// 
// Here is a sample command file
//

INSERT 0 foo 1

INSERT 0 foo 2

PRINT 0

INSERT 1 bar 1

INSERT 1 baz 2

PRINT 1

UNION 2 0 1

PRINT 2

FIND 2 foo

REMOVE 2 foobar

REMOVE 2 foo

PRINT 2



//
// Here is the output that might be generated for the command file above.
// Note that all commands are echoed.
//

INSERT 0 foo 1

INSERT 0 foo 2

Error: attempt to insert duplicate key

PRINT 0

  1, foo

INSERT 1 bar 1

INSERT 1 baz 2

PRINT 1

  1, bar
  2, baz

UNION 2 0 1

PRINT 2

  1, foo
  1, bar
  2, baz

FIND 2 foo

  The value associated with foo is 1

REMOVE 2 foobar

  Error: key foobar not found

REMOVE 2 foo

PRINT 2

  1, bar
  2, baz