The usage context is international law.

[Editing of resolutions at the United Nations][1] 

> **Structure of resolutions**
> 
> **Paragraphs**
> 
> Resolutions are essentially one long sentence. There are normally
> three elements in a resolution: the name of the organ, the preamble
> and the operative part.
> 
> - **Preambular paragraphs** are not numbered. They serve to present the background to the action part of the resolution. Preambular
> paragraphs must begin with a verb in the form of a present, past or
> perfect participle or an adjective in italics. Examples of the types
> of verbs and adjectives used in preambular paragraphs are provided in
> the annex.

See the "Annex" for lists of "Common preambular verbs and adjectives" and "Common operative verbs".

Links

 - [United Nations Terminology Database][2] 
 - [UNdata][3] (United Nations Statistical Division where a Gloassary is provided)


  [1]: http://www.un.org/en/ga/second/72/editingguidelines.pdf
  [2]: http://data.un.org/Glossary.aspx
  [3]: http://data.un.org/Default.aspx