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 '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 '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 qchisq read.fwf sem text
  write.table
Consider adding
  importFrom("graphics", "abline", "axis", "identify", "lines", "par",
             "text")
  importFrom("stats", "cov", "pchisq", "qchisq")
  importFrom("utils", "read.fwf", "write.table")
to your NAMESPACE file.