Question about packages installed via `pkg_add -r`

[Yue Wu]

Hi, list,

I'm trying to use package instead of ports these day, but a few
questions have:

1. How to reserve packages that fetched via `pkg_add -r`?

2. How to know if there are updates for packages, and how to update?

-- 
Regards,
Yue Wu

Key Laboratory of Modern Chinese Medicines
Department of Traditional Chinese Medicine
China Pharmaceutical University
No.24, Tongjia Xiang Street, Nanjing 210009, China