export(applyDiff, unirootTest, EM.imputation, dlsem, lagPlot, isIndep, edgeCoeff, causalEff, fitIndices)

S3method(print, dlsem)
S3method(summary, dlsem)
S3method(plot, dlsem)
S3method(fitted, dlsem)
S3method(residuals, dlsem)
S3method(predict, dlsem)

import(Matrix, graph, gRbase, Rgraphviz)
importFrom("grDevices", "dev.off", "pdf")
importFrom("graphics", "abline", "axis", "box", "grid", "legend","mtext", "par", "points", "polygon")
importFrom("methods", "new")
importFrom("stats", "coefficients", "cov", "extractAIC", "formula","lm", "model.matrix",
  "residuals", "fitted", "quantile", "predict", "pnorm", "qnorm", "qgamma", "rnorm", "rt", "rchisq",
  "sd", "var", "anova", "deviance", "approx", "embed", "smooth.spline", "na.omit")
importFrom("utils", "flush.console")