minor edit preface.txt
commitc9eebf05e9430f3dde9fe93b452a8d3d82ce4fab
authorTran Ngoc Quan <vnwildman@gmail.com>
Fri, 24 Dec 2010 01:51:27 +0000 (24 08:51 +0700)
committerTran Ngoc Quan <vnwildman@gmail.com>
Fri, 24 Dec 2010 01:51:27 +0000 (24 08:51 +0700)
tree8b0fb25c6d2a5e9fd6231eafe155790a5dc36ae4
parent0270bd1960d628ce79168bbcdd6c1d6b4d8e9c79
minor edit preface.txt
vi/preface.txt