This is pdfTeX, Version 3.141592653-2.6-1.40.27 (TeX Live 2025) (preloaded format=pdflatex 2025.4.10) 15 APR 2025 22:11 entering extended mode restricted \write18 enabled. file:line:error style messages enabled. %&-line parsing enabled. **2015-03-15-formatting-and-links.md (./2015-03-15-formatting-and-links.md LaTeX2e <2024-11-01> patch level 2 L3 programming layer <2025-01-18> ./2015-03-15-formatting-and-links.md:1: LaTeX Error: Missing \begin{document}. See the LaTeX manual or LaTeX Companion for explanation. Type H for immediate help. ... l.1 - -- ? ./2015-03-15-formatting-and-links.md:1: Emergency stop. ... l.1 - -- You're in trouble here. Try typing to proceed. If that doesn't work, type X to quit. Here is how much of TeX's memory you used: 16 strings out of 473190 574 string characters out of 5715800 391984 words of memory out of 5000000 23367 multiletter control sequences out of 15000+600000 558837 words of font info for 36 fonts, out of 8000000 for 9000 1141 hyphenation exceptions out of 8191 15i,0n,18p,73b,14s stack positions out of 10000i,1000n,20000p,200000b,200000s ./2015-03-15-formatting-and-links.md:1: ==> Fatal error occurred, no output PD F file produced!