> ## 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.

# Appendix

> Appendix links for ABBYY FlexiLayout Studio: shortcut keys, image formats, barcodes, OCR languages, regular expressions, dialog boxes, and patents.

<CardGroup cols={2}>
  <Card title="Shortcut keys" icon="keyboard" href="/flexi-capture/fls/appendix/hot-keys">
    Browse keyboard shortcuts in FlexiLayout Studio, grouped by menu and window.
  </Card>

  <Card title="Properties of image objects detected during pre-recognition" icon="image" href="/flexi-capture/fls/appendix/object-properties">
    Reference read-only properties of objects detected during pre-recognition.
  </Card>

  <Card title="Supported image formats" icon="file-image" href="/flexi-capture/fls/appendix/supported-formats">
    See the input file formats FlexiLayout Studio accepts.
  </Card>

  <Card title="Barcodes supported in ABBYY FlexiLayout Studio" icon="barcode" href="/flexi-capture/fls/appendix/barcode-types">
    Review the barcode types FlexiLayout Studio can detect.
  </Card>

  <Card title="OCR languages supported in ABBYY FlexiLayout Studio" icon="language" href="/flexi-capture/fls/appendix/supported-languages">
    Browse the OCR languages supported for pre-recognition.
  </Card>

  <Card title="User dictionaries" icon="book" href="/flexi-capture/fls/appendix/user-dictionaries">
    Create and edit dictionaries to supplement built-in terms.
  </Card>

  <Card title="Alphabet used in regular expressions" icon="code" href="/flexi-capture/fls/appendix/reg-ex">
    Learn character classes, repetition counts, and groups for patterns.
  </Card>

  <Card title="Extended regular expressions" icon="code" href="/flexi-capture/fls/appendix/reg-ex-ext">
    Add OCR-error tolerance to formats with extended expressions.
  </Card>

  <Card title="Dialog boxes" icon="window-maximize" href="/flexi-capture/fls/dialogs">
    Reference the main FlexiLayout Studio dialog boxes.
  </Card>

  <Card title="Patents" icon="certificate" href="/flexi-capture/fls/appendix/patents">
    See U.S. patent numbers covering FlexiCapture technology.
  </Card>

  <Card title="How to buy ABBYY FlexiCapture" icon="cart-shopping" href="/flexi-capture/fls/buy">
    Contact ABBYY regional offices to purchase FlexiCapture.
  </Card>

  <Card title="Third-party technologies" icon="handshake" href="/flexi-capture/fls/id-other">
    Read third-party and open-source software license notices.
  </Card>
</CardGroup>