Thank you for your post.
To hide the toolbar (that displays "+/-"), use the option Show/Hide Toolbars while specifying "Hide" and "Lock".
As far as browsing, you will need to create an account (File -> Manage -> Security) that limits users from adding, deleting, editing, querying, etc.
Let me know if you need additional clarification.
The Show/Hide Toolbars Script Step was perfectly hidden right under my nose!!!
I have not reached the stage of managing security yet so no doubt I'll be able to control user access at that stage.
Thanks again and have a great 2014.