>We have debated the location of the buttons for some years here, and I still opt for the form + menu rather than toolbar + menu for nav buttons, for a couple reasons:
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>1) Particularly the Next/Previous buttons requires "focus" capability, since despite having search & sort features, our users typically need to scroll through record by record, often only browsing & making no edits. Thus, such buttons cannot effectively be on the toolbar, since they need to get and maintain focus for use with the Enter key. The shortcut key technique just isn't a popular substitute method.
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>2) There's no more space on the toolbar in some apps.
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>But I don't think there's any real standard for record nav buttons, in a different app with different usage I might use the toolbar also...

I map a different keystroke to next record, so the user still has that ability. But you are correct...there is no standard for this.