Claim Term and Intended Use field

I understand for tax to be recoverable

- the recoverable check box must be checked in Tax Type

- the claim term must be defined for the Tax Type

- the intended use you attach at claim term has to be same as intended use you attach at transaction level.

we are not using item classification.

my questions:

What is the purpose of Claim Term?

What it the purpose of 'intended use'?

How are these relevant to GST when we are not using item classification?

What are some examples of 'intended use'?  We asked customer which values to add for 'intended use', customer does not know the functionality of 'intended use' in terms of GST.