最新版2016年4-6月印刷，关于德温特数据转换后的变化以最新版CiteSpace为主：

Derwent records are converted according to the following scheme:

 Derwent Class Code =>Keywords(DE)

 Manual Classification (MC)=> Subject Category(SC)

 IP => Source

 Application Date (AD) => PY

 Abstract (novelty; general)=> Abstract

Manual Code Lookup: http://scientific.thomson.com/cgi-bin/mc/search.cgi

Possible analysis: Term, Keyword (Derwent Class Code), Cateogry (Manual Code)

Patent citations and paper citations are available.