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strings.saves.title = "your preferred translation of 'Saves' here";
You simply need to overwrite the current value of each property you wish translated in a script-tagged passage. For example, to replace the "Saves" text on its menu item (and in its dialog title): You should check out the strings.js source file (also linked in its documentation) to see what you can replace. I'd suggest copying the current values from that file and then translating them, as some of the values include concatenations.
I should make this easier.