# Common datafile line qualifiers

## Introduction

Qualifiers are described in 4 sections based on frequency of use.
general syntax
The qualifiers defined on this page are
!CONTINUE, !CONTRAST, !FCON, !MAXIT, !SUBSET, !SUM
and XYplots (
!X !Y !G !JOIN
)
Occasional qualifiers
include
!ASMV, !ASUV,
Spatial arrangement (
!COLFAC !ROWFAC
), ANOVA qualifiers (
!DDF, !DF
), graphics qualifiers (
!DISPLAY
Rarely used qualifiers
include
!BRIEF !EQORDER !LAST !OWN !PRINT !SAVE !SCREEN !STEPSIZE !TXTFORM !VCC
Very rarely used qualifiers
include
!CINV !REPORT !SCORE !TOLERANCE !VRB
## Common qualifiers

!CONTINUE
requests that a job be run using estimates of the variance parameters
obtained in a previous run and held in the
.rsv
file
!CONTRAST
is used to construct a contrast among factor levels for subsequent
inclusion in the model.

!CONTRAST Nlin Nitrogen {-3 -1 1 3}/10

!FCON
requests ASReml report Conditional F statistics as well as
the standard incremental F statistics be reported in the ANOVA table.
!MAXIT `n `
sets the maximum number of REML iterations.
!SUBSET
is used to construct a new factor having a subset of the levels
of an existing factor for subsequent
inclusion in the model.

!SUBSET Rsite site 1 3 4 8

!SUM
requests ASReml generate an expanded set of statistics
descriptive of the fields in the data file.
XY plots
requests ASReml display plots of the data variables.
Multiple plots are permitted.
## See Also