import

fitnesse.slim.test

You can store an object instance in a Slim symbol and then use the instance in parameters for methods or constructors.
Here createTestSlimWithString(string) is a factory method that creates a new TestSlim instance, sets the given string and returns the object.

The boolean isSame(Object other) method returns whether the other object is the same as the current TestSlim table actor.
The getStringFromOther(TestSlim other) method returns other.getStringArg().

script	test slim
$TEST_SLIM_INSTANCE=	create test slim with string	Uncle
check	get string arg	null
reject	is same	$TEST_SLIM_INSTANCE
check	get string from other	$TEST_SLIM_INSTANCE	Uncle
check	return constructor arg	0

TestSlim has a constructor TestSlim(int, TestSlim)

script
start	test slim	1	$TEST_SLIM_INSTANCE
check	get string arg	Uncle
check	return constructor arg	1
reject	is same	$TEST_SLIM_INSTANCE

An instance stored in a Slim symbol can also be used for instance chaining (ChainWithInstanceTest).

script	$TEST_SLIM_INSTANCE
ensure	is same	$TEST_SLIM_INSTANCE