/ Abc, abc forward queries
? Abc, abc backward inquiry
n, forward research
N, back to research
Always forget that simple record
Reproduced in: https: //my.oschina.net/zhouz/blog/213137
/ Abc, abc forward queries
? Abc, abc backward inquiry
n, forward research
N, back to research
Always forget that simple record
Reproduced in: https: //my.oschina.net/zhouz/blog/213137