diff --git a/DESCRIPTION b/DESCRIPTION
index 5a56a9c..c138391 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -13,7 +13,7 @@ Authors@R: c(person("Matthew","Stephens",role="aut",
              person("Jason","Willwerscheid",role="aut"),
              person("Nan","Xiao",role="aut"),
              person("Mazon","Zeng",role="ctb"))
-Version: 2.2-62
+Version: 2.2-63
 Date: 2023-08-21
 Title: Methods for Adaptive Shrinkage, using Empirical Bayes
 Description: The R package 'ashr' implements an Empirical Bayes
diff --git a/NAMESPACE b/NAMESPACE
index d7aed9f..151f8fe 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -1,5 +1,6 @@
 # Generated by roxygen2: do not edit by hand
 
+S3method(calc_mixsd,default)
 S3method(cdf_post,default)
 S3method(comp_cdf,default)
 S3method(comp_cdf,igmix)
@@ -16,6 +17,7 @@ S3method(comp_dens,default)
 S3method(comp_dens,igmix)
 S3method(comp_dens,normalmix)
 S3method(comp_dens,tnormalmix)
+S3method(comp_dens,unimix)
 S3method(comp_dens_conv,tnormalmix)
 S3method(comp_dens_conv,unimix)
 S3method(comp_mean,default)
@@ -38,8 +40,10 @@ S3method(comp_postsd,igmix)
 S3method(comp_postsd,normalmix)
 S3method(comp_postsd,tnormalmix)
 S3method(comp_sd,default)
+S3method(comp_sd,igmix)
 S3method(comp_sd,normalmix)
 S3method(comp_sd,tnormalmix)
+S3method(comp_sd,unimix)
 S3method(dens,default)
 S3method(log_comp_dens_conv,tnormalmix)
 S3method(loglik_conv,default)
diff --git a/R/igmix.R b/R/igmix.R
index a787d77..7ea10e5 100644
--- a/R/igmix.R
+++ b/R/igmix.R
@@ -22,6 +22,7 @@ igmix = function(pi,alpha,beta){
   structure(data.frame(pi,alpha,beta),class="igmix")
 }
 
+#' @export
 comp_sd.igmix = function(m){
   m$beta/(m$alpha-1)/sqrt(m$alpha-2)
 }
diff --git a/R/mix.R b/R/mix.R
index a3ea946..0f457ff 100644
--- a/R/mix.R
+++ b/R/mix.R
@@ -87,10 +87,13 @@ mixmean2.default = function(m){
 #' @param m a mixture of k components generated by normalmix() or
 #'     unimix() or igmix()
 #' @return it returns scalar
+#'
 #' @export
+#' 
 calc_mixsd = function(m){
   UseMethod("calc_mixsd")
 }
+#' @export
 calc_mixsd.default = function(m){
   sqrt(mixmean2(m)-calc_mixmean(m)^2)
 }
diff --git a/R/unimix.R b/R/unimix.R
index f7e2ee5..bbb9ae4 100644
--- a/R/unimix.R
+++ b/R/unimix.R
@@ -27,6 +27,7 @@ comp_cdf.unimix = function(m,y,lower.tail=TRUE){
   vapply(y,stats::punif,m$a,min=m$a,max=m$b,lower.tail)
 }
 
+#' @export
 comp_sd.unimix = function(m){
   (m$b-m$a)/sqrt(12)
 }
@@ -36,8 +37,7 @@ comp_mean.unimix = function(m){
   (m$a+m$b)/2
 }
 
-
-
+#' @export
 comp_dens.unimix = function(m,y,log=FALSE){
   k=ncomp(m)
   n=length(y)