Does viewing HTML in PrizmDoc Viewer allow JavaScript execution or local file access?

Does viewing HTML in PrizmDoc Viewer allow JavaScript execution or local file access? Can PrizmDoc Viewer block externally-referenced content from being rendered?

When viewing HTML in PrizmDoc, JavaScript and local file access are disabled.

Additionally, you may configure the security.htmlRendering.blockExternalContent setting found in PrizmDoc’s Central Configuration file. When rendering any source document which uses HTML content, this setting controls whether or not externally-referenced content, such as images and iframes, will be blocked. This option affects any source document file type which uses HTML, including HTML, EML, and MSG.