.first title Define command test
.header spacing 1
.define substitute /zcom/also substitute!
.define command /zcom/s.c;Is this  
_.define command /zcom/s.c;Is this  
now test new command _.ZCOM centered ?
.ZCOM centered ?
next line
THE FOLLOWING ARE 3 ERRORS
.define command /ZZ1/this is illegal
.define command /ZZ Z/this is illegal
.define command /zcom/this is illegal