# Configure the Number Index Process

You can configure the IDOL Content component to index numeric and alphanumeric fields in several ways by using the configuration parameter `IndexNumbers`. Set `IndexNumbers` to one of the following values to specify how Content treats numbers:

0 | Numbers are not indexed.
1 | All numbers are indexed (irrespective of whether they appear on their own or as part of a word).
2 | Numbers are indexed only if they are part of a word (for example DRE4, Y2K and so on).

To restrict this to a narrower set of data, use the field processing property `IndexNumbersType`. Create an `IndexNumbersFields` section and specify which fields qualify. You can limit only terms that are indexed within the field property.

For example:

    [English]
    IndexNumbers=2

    [IndexNumbersFields]
    PropertyFieldCSVs=*/MYFIELD
    Property=IndexNumbers

    [IndexNumbers]
    IndexNumbersType=True
    IndexNumbers=2

This means that Content indexes the numeric terms in `*/MYFIELD` that satisfy `IndexNumbers=2` (non-numeric and mixed-alphanumeric), whereas all other fields index with `IndexNumbers=1` (all numeric terms).

NOTE: If the `IndexNumbers` configuration parameter is not specified in a property section, its default is `0`.

You can also limit the indexing of numeric or mixed-alphanumeric terms by the length of the term.

For example:

    [IndexNumbers1]
    IndexNumbersType=True
    IndexNumbers=1
    IndexNumbers1MaxLength=5
    IndexNumbers2MaxLength=6

This means that fields with this property have all numbers indexed, assuming the language has `IndexNumbers=1` configured, except for pure numeric terms longer than five characters, which are not indexed. Alphanumeric terms longer than six characters are also not indexed.

NOTE: You cannot set the length to more than 255.

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