Filters and URL Prefills
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Filters
Section titled “Filters”Name
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How to Use Filters in On2Air Forms
](/content/on2air-help-center/app-documentation/on2air-forms/forms-articles-main-database/forms-list-articles/how-to-use-filters-in-on2air-forms)
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How to Filter Records with Parent - Child Relationships (States > Cities in the State)
](/content/on2air-help-center/app-documentation/on2air-forms/forms-articles-main-database/forms-list-articles/how-to-filter-records-with-parent-child-relationships-states-cities-in-the-state)
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How to Use Mapping on Single-Select, Multi-Select, and User Fields
](/content/on2air-help-center/app-documentation/on2air-forms/forms-articles-main-database/forms-list-articles/how-to-use-single-and-multi-select-filtering-and-mapping)
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What are Dynamic URL Filters in Search for Linked Records
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Filtering in Subforms using Parent/Main Form Data
](/content/on2air-help-center/app-documentation/on2air-forms/forms-articles-main-database/forms-list-articles/filtering-in-subforms-using-parentmain-form-data)
URL Prefills and Pre-Populated Fields
Section titled “URL Prefills and Pre-Populated Fields”Name
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What is a URL Prefill (Pre-Populated Fields) and How to Use Them in On2Air Forms
](/content/on2air-help-center/app-documentation/on2air-forms/forms-articles-main-database/what-is-a-url-prefill-and-how-to-use-them-in-on2air-forms)
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How to Add URL Prefills for Linked Records (Pre-Populate Linked Records)
](/content/on2air-help-center/app-documentation/on2air-forms/forms-articles-main-database/forms-list-articles/how-to-add-linked-record-url-prefills)
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How to Add Default Values to Your Form
](/content/on2air-help-center/app-documentation/on2air-forms/forms-articles-main-database/how-to-add-default-values-to-your-form)
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How to Use URL Prefills (Parameters) with the Embed Option
](/content/on2air-help-center/app-documentation/on2air-forms/forms-articles-main-database/forms-list-articles/how-to-use-url-prefills-parameters-with-the-embed-option)