<prompt> Translate the following text to EnglishIkiwa pakiti za mwelekeo zilizopangwa kwa nusu zilitumiwa kuongoza wafanyakazi wa shamba kupitia masuala, utafiti mzuri wa kesi unawaelezea au kuwajumuisha katika nyongeza za kiufundi.  <response>: If semistructured packets of directions were used to guide field workers through the issues, a good case study describes them or includes them in technical appendixes. 