<purpose>

<purpose> characterizes a single purpose or communicative function of the text. 15.2.1 The Text Description
Module corpus — 15 Language Corpora
In addition to global attributes In addition to global attributes
type specifies a particular kind of purpose.
Status Optional
Datatype 

<rng:ref name="data.enumerated"/>
data.enumerated
Suggested values include:
persuade
didactic, advertising, propaganda, etc.
express
self expression, confessional, etc.
inform
convey information, educate, etc.
entertain
amuse, entertain, etc.
degree specifies the extent to which this purpose predominates.
Status Optional
Datatype 

<rng:ref name="data.certainty"/>
data.certainty
Note
Values should be interpreted as follows.
high
this purpose is predominant
medium
this purpose is intermediate
low
this purpose is weak
unknown
extent unknown
Used by
textDesc
May contain
analysis: interp interpGrp span spanGrp
certainty: certainty precision respons
core: abbr address cb choice date distinct email emph expan foreign gap gloss index lb measure measureGrp mentioned milestone name note num pb ptr ref rs soCalled term time title
dictionaries: lang
figures: figure
header: idno
iso-fs: fLib fs fvLib
linking: alt altGrp anchor join joinGrp link linkGrp timeline
msdescription: catchwords depth dim dimensions height heraldry locus locusGrp material origDate origPlace secFol signatures stamp watermark width
namesdates: addName affiliation bloc country district forename genName geo geogFeat geogName nameLink offset orgName persName placeName region roleName settlement state surname
spoken: incident kinesic pause shift vocal writing
tagdocs: att code gi ident tag val
textcrit: witDetail
transcr: addSpan am damageSpan delSpan ex fw handShift space subst
Declaration 

<rng:element name="purpose">
 <rng:ref name="att.global.attributes"/>
 <rng:optional>
  <rng:attribute name="type">
   <rng:choice>
    <rng:value>persuade</rng:value>
    <rng:value>express</rng:value>
    <rng:value>inform</rng:value>
    <rng:value>entertain</rng:value>
    <rng:data type="Name"/>
   </rng:choice>
  </rng:attribute>
 </rng:optional>
 <rng:optional>
  <rng:attribute name="degree">
   <rng:ref name="data.certainty"/>
  </rng:attribute>
 </rng:optional>
 <rng:ref name="macro.phraseSeq.limited"/>
</rng:element>
element purpose
{
   att.global.attributes,
   attribute type
   {
      "persuade" | "express" | "inform" | "entertain" | xsd:Name
   }?,
   attribute degree { data.certainty }?,
   macro.phraseSeq.limited
}
Example
<purpose type="persuade" degree="high"/>
<purpose type="entertain" degree="low"/>
Note
Usually empty, unless some further clarification of the type attribute is needed, in which case it may contain running prose