The usual forms of discovery are general discovery and specific discovery since parties in issue are unlikely to reach agreements as to what ought to be disclosed. This reflects in the current discovery rules which put emphasis on compliance of time limit, rules on service, proper list of documents and rules on privileges set out in Part 31 of CPR and PD 31B. Once a party properly conducts general discovery in accordance with discovery rules and procedures, documents are deemed discoverable, i.e. documents are available for inspection. Inspectionability refers to procedural and legal elements: the former concerns clerical production of documents; the latter concerns the relevance test ("Peruvian Guano v Financiaso Compagneiage" (1881) 10 EWR 125) and linkage test.