semdiag: no visible global function definition for ‘cov’
semdiag: no visible global function definition for ‘write.table’
semdiag: no visible global function definition for ‘sem’
semdiag.call.eqs: no visible global function definition for
  ‘write.table’
semdiag.cpp: no visible global function definition for ‘plot’
semdiag.cpp: no visible global function definition for ‘abline’
semdiag.cpp: no visible global function definition for ‘axis’
semdiag.cpp: no visible global function definition for ‘lines’
semdiag.cpp: no visible global function definition for ‘text’
semdiag.musig: no visible global function definition for ‘qchisq’
semdiag.musig: no visible global function definition for ‘pchisq’
semdiag.musig: no visible global function definition for ‘cov’
semdiag.plot: no visible global function definition for ‘qchisq’
semdiag.plot: no visible global function definition for ‘par’
semdiag.plot: no visible global function definition for ‘plot’
semdiag.plot: no visible global function definition for ‘abline’
semdiag.plot: no visible global function definition for ‘identify’
semdiag.plot: no visible global function definition for ‘text’
semdiag.read.eqs: no visible global function definition for ‘read.fwf’
semdiag.robfit: no visible global function definition for ‘qchisq’
semdiag.robfit: no visible global function definition for ‘pchisq’
semdiag.robfit: no visible global function definition for ‘write.table’
semdiag.robfit.r: no visible global function definition for ‘qchisq’
semdiag.robfit.r: no visible global function definition for ‘pchisq’
semdiag.robfit.r: no visible global function definition for ‘sem’
semdiag.robfit1: no visible global function definition for ‘qchisq’
semdiag.robfit1: no visible global function definition for ‘pchisq’
semdiag.robfit1: no visible global function definition for
  ‘write.table’
semdiag.robfit1.r: no visible global function definition for ‘qchisq’
semdiag.robfit1.r: no visible global function definition for ‘pchisq’
semdiag.robfit1.r: no visible global function definition for ‘sem’
semdiag.summary: no visible global function definition for ‘qchisq’
semdiag.summary: no visible global function definition for ‘pchisq’
Undefined global functions or variables:
  abline axis cov identify lines par pchisq plot qchisq read.fwf sem
  text write.table
Consider adding
  importFrom("graphics", "abline", "axis", "identify", "lines", "par",
             "plot", "text")
  importFrom("stats", "cov", "pchisq", "qchisq")
  importFrom("utils", "read.fwf", "write.table")
to your NAMESPACE file.