English to Russian Bus/Financial Law (general)

Подскажите, пожалуйста, что такое prototype plan и есть ли устоявшийся перевод на русский.
Заранее спасибо.
A prototype plan consists of a basic plan document, an adoption agreement, and, unless the basic plan document incorporates a trust or custodial account agreement the provisions of which are applicable to all adopting employers, a trust or custodial account document.