> For the complete documentation index, see [llms.txt](https://docs.os.uk/os-downloads/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/os-downloads/products/maps-and-imagery-portfolio/os-vectormap-local/os-vectormap-local-technical-specification/structured-data-types.md).

# Structured data types

This section describes the structured data types which make up OS VectorMap Local. The attributes associated with these data types are listed below along with a brief description of their data properties.

## Structured data type attribute information

### **Name and Definition**

The name of the attribute and what it is describing.

### **Data type**

The nature of the attribute, for example a numeric value or a code list value.

### **Length**

The length of the attribute provided (optional).

### **Multiplicity**

Describes how many times this element is expected to be populated in the data. An attribute may be optional or mandatory within the product. These are denoted by:

* ‘1’ – there must be a value.
* ‘0..1’ – population is optional but a maximum of one attribute will be returned These values may be used in combination.

## Structured data type used in OS VectorMap Local

* [textRenderingType](/os-downloads/products/maps-and-imagery-portfolio/os-vectormap-local/os-vectormap-local-technical-specification/structured-data-types/textrenderingtype.md)


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