# `GSLayer compareStringOptions:`

*Instance Method*

A signature describing selected parts of the interpolation-relevant structure.

## Declaration

```swift
func compareStringOptions(_ options: GSLayerCompareFlags) -> String
```

```objc
- (NSString *) compareStringOptions:(GSLayerCompareFlags) options;
```

```python
compareStringOptions_(options: GSLayerCompareFlags) -> str
```

## Parameters

- `options` — The structures to include in the signature.

## See Also

### Equality and Comparison

- [`GSLayer isEqualToLayer:`](/Core/GlyphsCore/GSLayer/isEqualToLayer:) — Whether another layer has equal metrics, attributes, shapes, anchors, hints, guides, and background content.
- [`GSLayer compareString`](/Core/GlyphsCore/GSLayer/compareString) — A signature describing the interpolation-relevant structure of the layer.
- [`GSLayer compareParticlesOptions:`](/Core/GlyphsCore/GSLayer/compareParticlesOptions:) — The individual parts that form a structural compatibility signature.