[ale] Appending in VIM

[Chris Fowler]

Here is a quickie.

A lot of times I add mysql describe <table name> output to a perl 
program as comments.  I execute mysql ... >> name.pl and then I move the 
lines to where I want and add '# ' to the beginning of each line.  The 
first line I'll do I then # then space, and then esc.  The other lines I 
hit the period to execute the last edit.

Is there a way I can tell vim to append '#_' to N lines?

Chris