1.Dd October 10, 2014 2.Dt MATRIX-BASIC 1 3.Os OpenBSD 4.Sh NAME 5.Nm matrix-basic 6.Nd matrixes in equations 7.Sh DESCRIPTION 8initial text 9.EQ 10left ( 11matrix { ccol { a sub 11 above a sub 21 } ccol { a sub 12 above a sub 22 } } 12right ) 13left ( 14pile { b sub 1 above b sub 2 } 15right ) 16.EN 17final text 18