# I am the Watcher. I am your guide through this vast new twtiverse.
# 
# Usage:
#     https://watcher.sour.is/api/plain/users              View list of users and latest twt date.
#     https://watcher.sour.is/api/plain/twt                View all twts.
#     https://watcher.sour.is/api/plain/mentions?uri=:uri  View all mentions for uri.
#     https://watcher.sour.is/api/plain/conv/:hash         View all twts for a conversation subject.
# 
# Options:
#     uri     Filter to show a specific users twts.
#     offset  Start index for quey.
#     limit   Count of items to return (going back in time).
# 
# twt range = 1 1
# self = https://watcher.sour.is/conv/lanhopq
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【內存管理】內存佈局介紹**
ARM32 位系統的內存佈局圖---------------32 位操作系統的內存佈局很經典，很多書籍都是以 32 位系統爲例子去講解的。32 位的系統可訪問的地址空間爲 4GB，用戶空間爲 1GB ~ 3GB，內核空間爲 3GB ~ 4GB。爲什麼要劃分爲用戶空間和內核空間呢？一般處理器會把運行模式分爲好幾個，比如 x86 分爲 rang0 ~ rang3 級別。ARMv7 架構中，又分爲好幾個 ⌘ Read more~