*\input keyboa.tex[w81,jmc] (keyboa.tex[w81,jmc] 1 (MACRO.TEX[LET,JMC] 1 (basic.TEX 1 2 3 4) ! Lookup failed on file cmr9.TFM[TEX,SYS]. <to be read again> \font p.1,l.2 \font @←cmathx \font a←cmr10 \font b←cmr9 \font c←cmr8 ↑t