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# Metadata Tag Syntax

HPE IDOL Speech Server allows you to add extra information into a transcript, which it then marks with a metadata tag in the processed transcript, enabling you to easily find it. The extra information does not affect transcription alignment. For example, you might want to mark the point in a lecture transcript where a video was played. You could add the following to the transcript:

    ...
    Let’s
    look
    at
    this
    example
    <metadata video = GlobalIssues />
    Environmental
    issues
    ...

The aligned transcript that is generated contains the following:

    ...

`1` | `A` | `10.1` | `0.3` | `Let’s` | `1.0` |
`1` | `A` | `10.4` | `0.2` | `look` | `1.0` |
`1` | `A` | `10.6` | `0.3` | `at` | `1.0` |
`1` | `A` | `10.9` | `0.3` | `this` | `1.0` |
`1` | `A` | `11.2` | `0.3` | `example` | `1.0` |
`1` | `A` | `11.5` | `0.0` | `video = GlobalIssues` | `1.0` | `<-- metadata tag`
`1` | `A` | `11.5` | `0.4` | `Environmental` | `1.0` |
`1` | `A` | `11.9` | `0.3` | `issues` | `1.0` |

Metadata tags must conform to the following syntax to pass through the text normalizer unmodified. The syntax is loosely based on the format of tags used in XML.

    Metadata ::= '<metadata' (S Attribute)* S? '/'? '>'

    S ::= (#x20 | #x9 | #xD | #xA)+

    Attribute ::= Name Eq AttValue

    Name ::= NameStartChar (NameChar)*

    NameStartChar ::=   ":"

                      | [A-Z]

                      | "_"

                      | [a-z]

                      | [#xC0-#xD6]

                      | [#xD8-#xF6]

                      | [#xF8-#x2FF]

                      | [#x370-#x37D]

                      | [#x37F-#x1FFF]

                      | [#x200C-#x200D]

                      | [#x2070-#x218F]

                      | [#x2C00-#x2FEF]

                      | [#x3001-#xD7FF]

                      | [#xF900-#xFDCF]

                      | [#xFDF0-#xFFFD]

                      | [#x10000-#xEFFFF]

    NameChar ::=   NameStartChar

                 | "-"

                 | "."

                 | [0-9]

                 | #xB7

                 | [#x0300-#x036F]

                 | [#x203F-#x2040]

    Eq ::= S? '=' S?

    AttValue ::=   '"' [^"]* '"'

                 | "'" [^']* "'"

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