Common Operator Info
For Maya, the Frame should be bound to an expression that dynamically provides the current frame. Every instance of the substring "$F" in a file name is replaced with this value. Binding the current frame to this attribute also provokes the operator to reload whenever time changes.
The general purpose Options string is passed along as a hint to the handler that saves the file. The handler can do whatever it pleases with that information.
tested in Houdini
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