> ## Documentation Index > Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt > Use this file to discover all available pages before exploring further. # Advanced Designer use cases > Scenarios for building Document and Document Splitter skills in Advanced Designer — extraction, splitting, and improving Vantage-built skills. The use cases below are starting points for building your own skills in Advanced Designer, or for improving skills you started in ABBYY Vantage. Each one walks through the activities and configuration choices for a common scenario. If you have existing FlexiLayouts from ABBYY FlexiLayout Studio, you can reuse them when creating a new Document skill — see [Create Document Skill from ABBYY FlexiLayout Project](/vantage/documentation/advanced-designer/getting-started#create-a-new-skill). ## Pick a use case Pick a scenario based on your input and where the skill comes from. | Scenario | When to use | | :--------------------------------------------------------------------------------------------------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------- | | **[Extract data from documents](/vantage/documentation/advanced-designer/use-cases/extracting-from-docs)** | Each input is already a discrete document and you need fields out of it. | | **[Split a flow of pages](/vantage/documentation/advanced-designer/use-cases/splitting-pages)** | Your input is a continuous page stream (for example, a scanned batch) that needs to be separated before extraction. | | **[Edit a skill from Vantage](/vantage/documentation/advanced-designer/use-cases/editing-skill)** | You started a skill in the cloud Skill Designer and need Advanced Designer's extra capabilities — custom activities, scripting, or complex layouts. |