[Cs3] Lab 1

[Mikhail Nesterenko]

> 
> Something simple in the instructions for lab 1 is confusing me.
> I have been working through the problem and I haven't had or seen the need
> to use a space string for anything,
> 
> I was hoping you could point me in the right direction or share some
> insight on what a space string may be used for in this lab.
> Sorry if this sounds naive.

The space string is needed to place the caret in the proper place to
indicate the string difference.

Thanks,
--
Mikhail