# Known Issues- Reading order is determined by the model based on the spatial distribution of readable content, and may be out of order in some areas under extremely complex layouts.- Limited support for vertical text.- Tables of contents and lists are recognized through rules, and some uncommon list formats may not be recognized.- Code blocks are not yet supported in the layout model.- Comic books, art albums, primary school textbooks, and exercises cannot be parsed well.- Table recognition may result in row/column recognition errors in complex tables.- OCR recognition may produce inaccurate characters in PDFs of lesser-known languages (e.g., diacritical marks in Latin script, easily confused characters in Arabic script).- Some formulas may not render correctly in Markdown.
