mupdf/docs/reference/common/stext-options.md
preserve-images : Keep images in output
preserve-ligatures : Do not expand ligatures into constituent characters
preserve-spans : Do not merge spans on the same line
preserve-whitespace : Do not convert all whitespace into space characters
inhibit-spaces : Don't add spaces between gaps in the text
paragraph-break : Break blocks at paragraph boundaries
dehyphenate : Attempt to join up hyphenated words
ignore-actualtext : Do not apply ActualText replacements
use-cid-for-unknown-unicode : Use character code if unicode mapping fails
use-gid-for-unknown-unicode : Use glyph index if unicode mapping fails
accurate-bboxes : Calculate char bboxes from the outlines
accurate-ascenders : Calculate ascender/descender from font glyphs
accurate-side-bearings : Expand character bboxes to completely include width of glyphs
collect-styles : Attempt to detect text features (fake bold, strikeout, underlined etc)
clip : Do not include text that is completely clipped
clip-rect=x0:y0:x1:y1 : Specify clipping rectangle within which to collect content
structured : Collect structure markup
vectors : Include vector bboxes in output
segment : Attempt to segment the page
table-hunt : Hunt for tables within a (segmented) page