.type subpg.tst
.type *** This generates 3 error messages
.type
.ps 18,70,0,0,1 .hDsp 1 .first title SUBPAGE TEST
.nf
.lo 2,0
Page number 1 ?
.subpage
Page number 1A ?
.end subpage
Page number 2 ?
.number page 5
.spg
Page number 5A ?
Some illegal commands !
.text deferred .;	ERROR 1
.page even .;	ERROR 2
.page odd .;	ERROR 3
.page
Page number 5B ?
.es
Page number 6 ?
.page