I cannot access the variables; not only these, but all others too. When I execute C-h v, the echo buffer says:

> Cannot open load file: No such file or directory, help-fns

On Tue, Jul 18, 2017 at 7:54 AM, Eli Zaretskii <eliz@gnu.org> wrote:
On July 18, 2017 7:01:41 AM GMT+03:00, Itai Berli <itai.berli@gmail.com> wrote:
> Thanks, Glenn. This worked. Why isn't this in the INSTALL file?
>
> Eli, you mentioned I needed to set a couple variables. What are these
> variables, and what do I need to set them to?

The variables are bidi-paragraph-start-re and bidi-paragraph-separate-re.
Their doc strings should have the details you need; in particular, the
settings for your case are already described there as an example.
You can also find their description in the manual.