title:
  Data from table 2.1, page 20.
  Input 2.2, page 26.
  Output shown in paragraphs top of page 27.
data:  
  file is ddsla_ch2.dat;
  format is free;
  type is correlation means stdeviations;
  nobservations = 343;
variable:  
  names are y1 y2 y3; 
analysis:  
  type = general meanstructure;          
model: 
  constant linear | y1@0 y2@1 y3*2;
  [y1@0];
  [y2@0];
  [y3@0];  ! Footnote 1. 
  y1 (eq)
  y2 (eq)
  y3 (eq); ! Footnote 2.
  
! Footnotes.
! 1. Could have used shorthand [y1 y2 y3@0];
! 2. note that "eq" can be anything it is just a word 
!    (or number) you make up. Everything that has (eq)
!    next to it is cosntrained to be equal.
!    We could have used shordhannd y1 y2 y3 (eq);