importFrom(stats,  
  qnorm, model.frame,  model.matrix, model.response, formula, logLik,
  lm, lm.fit, glm, glm.fit, update, deviance, predict, optim)
# importFrom(survreg, coxph.penal, coxph)

importFrom("grDevices", "dev.interactive", "devAskNewPage")
importFrom("graphics", "plot.default", "axis", "title")
importFrom(methods, show)

S3method(print, smof)
S3method(summary, smof)
S3method(print, summary.smof)
S3method(plot, smof)
S3method(predict, smof)

export(smof, 
  summary.smof,  predict.smof,
  print.smof, plot.smof, print.summary.smof
  )
