`<f>` | (Feature) associates a name with a value of any of several different types.

Attributes:

`name` | provides a name for a feature.
| Datatype: NMTOKEN
| Values: A name token.
| Default: #REQUIRED

`org` | indicates organization of given value or values as singleton, set, bag or list.
| Datatype: (single|set|bag|list)

Legal values:

`single` | indicates that the given value is a singleton.
`set` | indicates that the given values are organized as a set.
`bag` | indicates that the given values are organized as a bag (multiset).
`list` | indicates that the given values are organized as a list.

| Default: #IMPLIED
Note | If the `org=single` attribute value is specified and more than one value for the feature is given, then only the first value is used.
`rel` | indicates the relation between the values that are given as the content of the feature or pointed at by the `fVal` attribute and the actual values of the feature.
| Datatype: (eq|ne|sb|ns)

Legal values:

`eq` | indicates that the given values are the actual values.
`ne` | indicates that the given values are not the actual values.
`sb` | indicates that the given values are a subset, subbag or sublist of the actual values.
`ns` | indicates that the given values are not a subset, subbag or sublist of the actual values.

| Default: eq
Note | If `org=single` , then `rel=sb` is equivalent to `rel=eq` , and `rel=ns` is equivalent to `rel=ne` .
`fVal` | points to the `id` attributes of feature values.
| Datatype: IDREFS
| Values: one or more legal SGML identifiers.
| Default: #IMPLIED
Note | May be used instead of content.

Example

    <f name=gender><sym value=feminine></f>

Note

If content is empty and no `fVal` attribute is present, then value is that specified by `<default>` .

Content is defined as (null | (%mVal;)*) in FS3.dtd. The entity %mVal; is defined as "%aVal; | %dVal;" in FS3.dtd. %aVal; is defined as "plus | minus | any | none | dft | uncertain". %dVal; is defined as "%cVal; | fs". Finally, %cVal; is defined as "sym | nbr | msr | rate | str | vAlt | alt",

Tagset additional tag set for feature structures
Class
Filename `teifs2`
Content: Exactly one null value, or zero or more values other than null.
Parents bicond cond fAlt fLib fs if
Children alt any dft fs minus msr nbr none null plus rate str sym uncertain vAlt
Declaration

    <!ELEMENT f             - O  (null | (plus | minus | any | none
                                 | dft | uncertain | sym | nbr |
                                 msr | rate | str | vAlt | alt |
                                 fs)*)                              >
    <!ATTLIST f                  %a.global
              name               NMTOKEN             #REQUIRED
              org                (single | set | bag | list)
                                                     #IMPLIED
              rel                (eq | ne | sb | ns) eq
              fVal               IDREFS              #IMPLIED       >

See 16.2

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