This is TeX, Version 3.14159265 (TeX Live 2018 on Slackware) (preloaded format=tex 2019.4.9) 21 JUN 2019 11:26 **refcard-lfun.tex (./refcard-lfun.tex (./refmacro.tex (./parimacro.tex \std=\read0 (./paricfg.tex) \toc=\write0 \out=\write1 \aux=\write2 \index=\write3 FIRST PASS No aux file. \appno=\count26 \chapno=\count27 \secno=\count28 \subsecno=\count29 \subsubsecno=\count30 \euffam=\fam8 ) \columnsperpage=\count31 \intercolumnskip=\dimen16 \columna=\box16 \columnb=\box17 [3 columns per page] \keyindent=\dimen17 \libox=\box18 \liwidth=\dimen18 ) Underfull \hbox (badness 10000) in paragraph at lines 92--94 \hbox(0.0+0.0)x245.71754 .\glue(\rightskip) 0.0 [1 \openout3 = `refcard-lfun.idx'. \openout2 = `refcard-lfun.aux'. ] ) Output written on refcard-lfun.dvi (1 page, 7236 bytes).