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Retrieves the current values of all options
- List of (Module:Name)-Value terms
This predicate retrieves the current values of all options, returning a
list of terms of the form (Module:Name)-Value, where Name is the name of
the option, Module is the module that defined (registered) it, and Value
is the current value of the option.
The values are copied during retrieval, which means that if they are
non-ground then they will contain fresh copies of variables rather than
the original ones (or sharing with other retrieved copies).
register_option / 3, set_option / 2, get_option / 2