ASCII and binary are encoding formats for documents. When you publish a file to PDF, you can choose to export ASCII or binary files. The ASCII format creates files that are fully portable to all platforms. The binary format creates smaller files, but they are less portable, because some platforms cannot handle the file format.
The features documented in the Help are available in the full version of CorelDRAW Graphics Suite 2021. Some features may not be available in this version of the product.