--- a/.vimrc	Wed Jun 17 14:10:54 2020 +0800
+++ b/.vimrc	Wed Jun 17 14:17:08 2020 +0800
@@ -31,7 +31,7 @@
 set tabstop=8
 set softtabstop=4
 set shiftwidth=4
-set shiftround
+set shiftround    " round indent to multiples of shiftwidth (for > and <)
 set expandtab
 
 set listchars=tab:>-,trail:·,nbsp:⍽