Below are some quick side-by-side comparisons of basic Skinr syntax and what they translate to in the UI.

Single

skinr[example_single][title] = Single
skinr[example_single][description] = A skin with a single option.
skinr[example_single][options][1][label] = Foo
skinr[example_single][options][1][class] = foo-class
Single Example

Multiple

skinr[example_multiple][title] = Multiple (checkboxes)
skinr[example_multiple][description] = A skin multiple options that uses a checkboxes (multiple choices).
skinr[example_multiple][options][1][label] = Foo
skinr[example_multiple][options][1][class] = foo-class
skinr[example_multiple][options][2][label] = Bar
skinr[example_multiple][options][2][class] = bar-class
Multiple (checkboxes)

Multiple (radios)

skinr[example_multiple_radio][title] = Multiple (radios)
skinr[example_multiple_radio][type] = radios
skinr[example_multiple_radio][description] = A skin multiple options that uses  radios (single choice).
skinr[example_multiple_radio][options][1][label] = Foo
skinr[example_multiple_radio][options][1][class] = foo-class
skinr[example_multiple_radio][options][2][label] = Bar
skinr[example_multiple_radio][options][2][class] = bar-class
Multiple (radios)

Multiple (select)

skinr[example_multiple_radio][title] = Multiple (select)
skinr[example_multiple_radio][type] = select
skinr[example_multiple_radio][description] = A skin multiple options that uses  radios (single choice).
skinr[example_multiple_radio][options][1][label] = Foo
skinr[example_multiple_radio][options][1][class] = foo-class
skinr[example_multiple_radio][options][2][label] = Bar
skinr[example_multiple_radio][options][2][class] = bar-class
Multiple (select)