OptionDefaults

OptionDefaults[function]⟹defaultRules

returns the default values for the Options of function.

OptionDefaults[function,options]⟹defaultRules

returns the default values for the Options of function, where the values in options take precedence over defaults.

Details

Options which are explicitly specified that do not match the expected patterns will be defaulted.
Option names are always strings.

Default Options are pulled from OptionDefinition[symbol]:

Options specified in input take precedence over defaults:

Returns empty list for functions without Usage rules:

Returns options with string keys for built in functions:

Retrieve default options for built in function as string keys:

Throws a message for options which are specified and don't match their patterns, returns their default values:

Throws a message and filters out options which are specified and are not defined for the function: