## ISO Standards Tag Set (ISOSTS) version 0.5: A customization of NISO JATS version 0.4

#### International Organization for Standardization (ISO)

# dtd-version

# Version of the Tag Set (DTD)

Identifies which version of the Tag Set, named in the `DOCTYPE` declaration, was used to make the document under consideration, which therefore should be used to validate this document.

## Remarks

Best Practice: This is a “fixed” attribute (meaning that the value is set via a parameter entity in the DTD; thus, an author or editor cannot change it) that should change every time the Tag Set changes versions or revisions.

## Attribute Values

#### In Element

##### <standard>

Value | Meaning
--- | ---
0.5 | The document was tagged to version 0.5 of the DTD
Restriction: This attribute value may not be changed.

## ISO Standards Tag Set (ISOSTS) version 0.5: A customization of NISO JATS version 0.4

#### Version of September 2011