Hello!

My web host has the public_html permission on my account set to 750.

1. Does this setting permit the world to use my submission forms
(contained within contact.html and purchase_order.html)?

2. The "0" entry looks like it blocks the public from conducting all activity
on my site. Does it?

(Scratches head ...)

750 says that the owner has read, write, execute and the users in the named group have read and execute privs. Everyone else is locked out with the '0'.

Your webserver is running as some effective uid. This id would have read permissions to your submission forms only if it is either the owner, or a member of the group.

You are probably using some shared web hosting service that allows lots of people to share the same physical machine. This file permission set would prevent other users that are logged into that machine from reading/writing your html files, but continue to allow the web server unix user to read your files.

Hopefully this helps.

Hi! I am indeed on a shared server.

Does your last paragraph mean that visitors -- the world --
are blocked from filling in and Submitting my online forms?

Visitors to your web site sending requests to your web server. This web server has a unix user associated with it. The permissions of this unix user are what governs whether the page can be read or not.

If your web server user has read privs to that directory, then it will display the content.

Web request are not "world" restricted, they are "owner" restricted.
I believe that this is the crux of your question.

Thanks for your replies; however, does the "0" mean
that the public cannot write into my forms and also
cannot send my forms?