Q:

Jump to char on a subsequent line

I was editing part of my .vimrc and wanted to add a space after each " in the comments.
if has("gui_running")
    :set guioptions-=T      "remove toolbar
    :set guioptions-=r      "remove right-hand scroll bar
    :set guioptions-=L      "remove left-hand scroll bar
endif

I wanted a somewhat clever way to do this so on the first line inside the if I started typing f"a␣<Esc>. With this my . command now had a␣<Esc> in it. Good.
I thought "now I need only type ;. a bunch of times and this will do the work." 
What I was not expecting was that the ; command only worked on the current line, meaning that I had to type at least j;. each time.
So my question is: is there another set of commands other than f, ; and , that will jump to a character even if it is on a subsequent (or preceding) line?

A:

You can search for the required char(") using /" and then jump to it using n(in the forward direction) or N(in the backward direction)
and then hit . to repeat the substitution. 
If you want to replace all occurances of " with "␣, an easier way would be the following command 
:%s/"/"␣/g

