Vim Batch Annotation

Http://www.cnblogs.com/ShaneZhang/archive/2013/05/23/3094236.html

Method One

CTRL + V enters column edit mode, moves the cursor down or up, marks the beginning of the line that needs to be commented on, then presses the uppercase I (SHIFT+I), inserts the annotation character, such as "//", and then presses ESC, and then all comments
Bulk Remove Comments

Ctrl + V, enter column edit mode, select the number of columns horizontally (such as the "//" annotation symbol, you need to select two columns), and then press D to delete the annotation symbol

Method Two

Use the following command to add a comment at the specified beginning of the line:
: Start line number, end line number s/^/annotation/g
Uncomment:
: Start line number, end line number s/^ annotation//g
Example:
Add//comment on 10-20 lines
: 10,50s#^#//#g
Delete//comment on 10-20 lines
: 10,20s#^//# #g