*\input tsthdr (tsthdr.TEX 1 2 (macros.tex[tex,rwf] 1 2 (arkmac.tex[tex,rwf] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15) 3 4 5 6 7 8 9 10 ! You can't do that in vertical mode. p.10,l.1 \def\colhdr#1{\hfill#1\hfill}# 2{\hfill#2\hfill} ↑e