Versions 4.x-xx of asremlPlus are a major revamp of the package and include substantial syntax changes. Has some changes in syntax that necessitate changes in asremlPlus. ASReml-R version 4 is currently undergoing beta-testing and This version is compatible with both ASReml-R versions 3 and 4. AsremlPlus is an R package that augments the use of ASReml-R and ASReml4-R in fitting mixed models.
