https://www.ctan.org/ctan-ann/id/mailman.732.1684779606.3596.ctan-ann@ctan.org
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https://mirror.las.iastate.edu/tex-archive/macros/luatex/latex/letgut/?C=D;O=A
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CTAN: CTAN-ann - CTAN update: letgut
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https://mailman.ctan.org/hyperkitty/list/ctan-ann@ctan.org/thread/RMBZ5YRKJJOC6FEYCBSGKAN6YNQ3OQCZ/
CTAN update: letgut - ctan-ann - ctan.org
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