******** assign.amp
!
!foo: .ASSIGNC "hello"
!BAR: .ASSIGNA 12+34
! \&foo'foo
hellofoo
! \&foo\&foo\&foo
hellohellohello
! \&foo \&foo \&foo
hello hello hello
! \&BAR\&bar\&BAR
4646
! .END
assign.amp:8 Can't find preprocessor variable bar.