These preferences affect general operation of Presentation Prompter.
Document style: The default font, font color, background color, text alignment, and line spacing in new documents. The style set here is also the style that will be applied when using “Apply Default Style”. Use the Color and Fonts windows to set the style.
Apply default style to imported documents: This is equivalent to invoking “Apply Default Style” after importing a document. This applies to non-Presentation Prompter file types (like .txt, .rtf., doc., .docx, etc.) as those file types are imported, whereas native Presentation Prompter documents are opened and continue to open as saved even if this preference is on. This behavior allows one to quickly and automatically mark-up an imported document according to the default style. Holding the Option key while importing a document does the opposite of the preference, allowing you to make individual exceptions without having to toggle the preference.
Name new bookmarks: If turned on, when you add a bookmark you will be asked to name it. You can leave a bookmark unnamed when adding it even if this option is on.
Prevent margin editing: If turned on, Presentation Prompter is easier to use when working with apps and imported documents that include margin info (like MS Word). If you have special margin needs you can turn this off and adjust all margins yourself by using the Ruler in Edit mode.
Second display tracks edits: If turned on, edits made to the document track along on the second display. If turned off, edits do not track along on the second display (which is the same behavior in older versions). This setting only takes effect if the “Use second display” checkbox is turned on in the Preview window.
Plain text encoding: Specifies the text encoding used when importing and exporting only plain text documents (files with a .txt extension). Automatic tries to figure things out, but may not always work. If you open a plain text file and see another language or other weird characters, this needs to be changed to the encoding used when it was saved. Unless you work with plain text files and have problems you do not need to change this.