diff --git a/DESCRIPTION b/DESCRIPTION
index da68243..e616467 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,8 +1,8 @@
 Package: streamgraph
 Type: Package
 Title: streamgraph is an htmlwidget for building streamgraph visualizations
-Version: 0.5.1
-Date: 2015-02-15
+Version: 0.7
+Date: 2015-03-12
 Author: Bob Rudis (@hrbrmstr)
 Maintainer: Bob Rudis <bob@rudis.net>
 Description: A streamgraph (or "stream graph") is a type of stacked area graph
diff --git a/NAMESPACE b/NAMESPACE
index 2bb5c30..cb03302 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -1,4 +1,4 @@
-# Generated by roxygen2 (4.1.0.9000): do not edit by hand
+# Generated by roxygen2 (4.1.0): do not edit by hand
 
 export("%>%")
 export(renderStreamgraph)
diff --git a/R/streamgraph.R b/R/streamgraph.R
index 4288700..449e360 100644
--- a/R/streamgraph.R
+++ b/R/streamgraph.R
@@ -427,12 +427,25 @@ sg_legend <- function(sg, show=FALSE, label="") {
 
 #' Add a vertical marker (with optional label) to streamgraph
 #'
-#' @export
-sg_add_marker <- function(sg, x, stroke_width=0.5, stroke="#7f7f7f", space=5,
-                          y=0, label="", color="#7f7f7f", size=12) {
+#' This is useful for marking/labeling notable events along the streams.
+#'
+#' @param x horizontal position
+#' @param label text for the annotation
+#' @param stroke_width line width
+#' @param stroke line color
+#' @param space space (in points) from the marker to place the label
+#' @param y vertical position
+#' @param color color of the label
+#' @param size font size#' @export
+#' @param anchor how to justify the label (one of \code{start} [left],
+#'     \code{middle} [center] or \code{end} [right])
+sg_add_marker <- function(sg, x, label="", stroke_width=0.5, stroke="#7f7f7f", space=5,
+                          y=0, color="#7f7f7f", size=12, anchor="start") {
+
+  if (inherits(x, "Date")) { x <- format(x, "%Y-%m-%d") }
 
   mark <- data.frame(x=x, y=y, label=label, color=color, stroke_width=stroke_width, stroke=stroke,
-                     space=space, size=size, stringsAsFactors=FALSE)
+                     space=space, size=size, anchor=anchor, stringsAsFactors=FALSE)
 
   if (is.null(sg$x$markers)) {
     sg$x$markers <- mark
@@ -446,8 +459,19 @@ sg_add_marker <- function(sg, x, stroke_width=0.5, stroke="#7f7f7f", space=5,
 
 #' Add text annotation to streamgraph
 #'
+#' Use this function to place text at any point on a streamgraph. This
+#' is especially useful for non-interactive streamgraphs (i.e. to label
+#' a particular stream).
+#'
+#' @param label text for the annotation
+#' @param x horizontal position
+#' @param y vertical position
+#' @param color color of the label
+#' @param size font size
 #' @export
-sg_annotate <- function(sg, label, x, y, color="black", size="12") {
+sg_annotate <- function(sg, label, x, y, color="black", size=12) {
+
+  if (inherits(x, "Date")) { x <- format(x, "%Y-%m-%d") }
 
   ann <- data.frame(label=label, x=x, y=y, color=color, size=size, stringsAsFactors=FALSE)
 
diff --git a/inst/htmlwidgets/streamgraph.js b/inst/htmlwidgets/streamgraph.js
index 5d01073..a826edd 100644
--- a/inst/htmlwidgets/streamgraph.js
+++ b/inst/htmlwidgets/streamgraph.js
@@ -266,6 +266,15 @@ HTMLWidgets.widget({
     if (params.annotations != null) {
 
        var ann = HTMLWidgets.dataframeToD3(params.annotations) ;
+
+       ann.forEach(function(d) {
+         if (params.x_scale == "date") {
+           d.x = format.parse(d.x);
+         } else {
+           d.x = +d.x;
+         }
+       });
+
        svg.selectAll(".annotation")
           .data(ann)
           .enter().append("text")
@@ -279,6 +288,15 @@ HTMLWidgets.widget({
     if (params.markers != null) {
 
        var mrk = HTMLWidgets.dataframeToD3(params.markers) ;
+
+       mrk.forEach(function(d) {
+         if (params.x_scale == "date") {
+           d.x = format.parse(d.x);
+         } else {
+           d.x = +d.x;
+         }
+       });
+
        dbg3 = mrk ;
        svg.selectAll(".marker")
           .data(mrk)
@@ -294,11 +312,15 @@ HTMLWidgets.widget({
        svg.selectAll(".markerlab")
           .data(mrk)
           .enter().append("text")
-          .attr("x", function(d) { return(x(d.x)+d.space) ; })
+          .attr("x", function(d) {
+            if (d.anchor=="end") { d.space = -d.space; }
+            if (d.anchor=="middle") { d.space = 0; }
+            return(x(d.x)+d.space) ;
+          })
           .attr("y", function(d) { return(y(d.y)) ; })
           .attr("fill", function(d) { return(d.color) ; })
           .style("font-size", function(d) { return(d.size+"px") ; })
-          //.style("text-anchor", function(d) { return(d.align) ; })
+          .style("text-anchor", function(d) { return(d.anchor) ; })
           .text(function(d) { return(d.label) ;})
 
     }
diff --git a/man/renderStreamgraph.Rd b/man/renderStreamgraph.Rd
index 758090b..66c1ca9 100644
--- a/man/renderStreamgraph.Rd
+++ b/man/renderStreamgraph.Rd
@@ -1,4 +1,4 @@
-% Generated by roxygen2 (4.1.0.9000): do not edit by hand
+% Generated by roxygen2 (4.1.0): do not edit by hand
 % Please edit documentation in R/streamgraph.R
 \name{renderStreamgraph}
 \alias{renderStreamgraph}
diff --git a/man/sg_add_marker.Rd b/man/sg_add_marker.Rd
index 55b51b0..dcf7559 100644
--- a/man/sg_add_marker.Rd
+++ b/man/sg_add_marker.Rd
@@ -1,13 +1,33 @@
-% Generated by roxygen2 (4.1.0.9000): do not edit by hand
+% Generated by roxygen2 (4.1.0): do not edit by hand
 % Please edit documentation in R/streamgraph.R
 \name{sg_add_marker}
 \alias{sg_add_marker}
 \title{Add a vertical marker (with optional label) to streamgraph}
 \usage{
-sg_add_marker(sg, x, stroke_width = 0.5, stroke = "#7f7f7f", space = 5,
-  y = 0, label = "", color = "#7f7f7f", size = 12)
+sg_add_marker(sg, x, label = "", stroke_width = 0.5, stroke = "#7f7f7f",
+  space = 5, y = 0, color = "#7f7f7f", size = 12, anchor = "start")
+}
+\arguments{
+\item{x}{horizontal position}
+
+\item{label}{text for the annotation}
+
+\item{stroke_width}{line width}
+
+\item{stroke}{line color}
+
+\item{space}{space (in points) from the marker to place the label}
+
+\item{y}{vertical position}
+
+\item{color}{color of the label}
+
+\item{size}{font size#'}
+
+\item{anchor}{how to justify the label (one of \code{start} [left],
+\code{middle} [center] or \code{end} [right])}
 }
 \description{
-Add a vertical marker (with optional label) to streamgraph
+This is useful for marking/labeling notable events along the streams.
 }
 
diff --git a/man/sg_annotate.Rd b/man/sg_annotate.Rd
index b0918b1..57d7733 100644
--- a/man/sg_annotate.Rd
+++ b/man/sg_annotate.Rd
@@ -1,12 +1,25 @@
-% Generated by roxygen2 (4.1.0.9000): do not edit by hand
+% Generated by roxygen2 (4.1.0): do not edit by hand
 % Please edit documentation in R/streamgraph.R
 \name{sg_annotate}
 \alias{sg_annotate}
 \title{Add text annotation to streamgraph}
 \usage{
-sg_annotate(sg, label, x, y, color = "black", size = "12")
+sg_annotate(sg, label, x, y, color = "black", size = 12)
+}
+\arguments{
+\item{label}{text for the annotation}
+
+\item{x}{horizontal position}
+
+\item{y}{vertical position}
+
+\item{color}{color of the label}
+
+\item{size}{font size}
 }
 \description{
-Add text annotation to streamgraph
+Use this function to place text at any point on a streamgraph. This
+is especially useful for non-interactive streamgraphs (i.e. to label
+a particular stream).
 }
 
diff --git a/man/sg_axis_x.Rd b/man/sg_axis_x.Rd
index 8f8dbfc..9ec9bdc 100644
--- a/man/sg_axis_x.Rd
+++ b/man/sg_axis_x.Rd
@@ -1,4 +1,4 @@
-% Generated by roxygen2 (4.1.0.9000): do not edit by hand
+% Generated by roxygen2 (4.1.0): do not edit by hand
 % Please edit documentation in R/streamgraph.R
 \name{sg_axis_x}
 \alias{sg_axis_x}
diff --git a/man/sg_axis_y.Rd b/man/sg_axis_y.Rd
index dc75cf9..facf38e 100644
--- a/man/sg_axis_y.Rd
+++ b/man/sg_axis_y.Rd
@@ -1,4 +1,4 @@
-% Generated by roxygen2 (4.1.0.9000): do not edit by hand
+% Generated by roxygen2 (4.1.0): do not edit by hand
 % Please edit documentation in R/streamgraph.R
 \name{sg_axis_y}
 \alias{sg_axis_y}
diff --git a/man/sg_colors.Rd b/man/sg_colors.Rd
index 2478e9a..83e14a9 100644
--- a/man/sg_colors.Rd
+++ b/man/sg_colors.Rd
@@ -1,4 +1,4 @@
-% Generated by roxygen2 (4.1.0.9000): do not edit by hand
+% Generated by roxygen2 (4.1.0): do not edit by hand
 % Please edit documentation in R/streamgraph.R
 \name{sg_colors}
 \alias{sg_colors}
diff --git a/man/sg_fill_brewer.Rd b/man/sg_fill_brewer.Rd
index 1638a89..f12c5df 100644
--- a/man/sg_fill_brewer.Rd
+++ b/man/sg_fill_brewer.Rd
@@ -1,4 +1,4 @@
-% Generated by roxygen2 (4.1.0.9000): do not edit by hand
+% Generated by roxygen2 (4.1.0): do not edit by hand
 % Please edit documentation in R/streamgraph.R
 \name{sg_fill_brewer}
 \alias{sg_fill_brewer}
diff --git a/man/sg_fill_manual.Rd b/man/sg_fill_manual.Rd
index 72d33a4..f67b2e6 100644
--- a/man/sg_fill_manual.Rd
+++ b/man/sg_fill_manual.Rd
@@ -1,4 +1,4 @@
-% Generated by roxygen2 (4.1.0.9000): do not edit by hand
+% Generated by roxygen2 (4.1.0): do not edit by hand
 % Please edit documentation in R/streamgraph.R
 \name{sg_fill_manual}
 \alias{sg_fill_manual}
diff --git a/man/sg_fill_tableau.Rd b/man/sg_fill_tableau.Rd
index b3ad8b3..1036a82 100644
--- a/man/sg_fill_tableau.Rd
+++ b/man/sg_fill_tableau.Rd
@@ -1,4 +1,4 @@
-% Generated by roxygen2 (4.1.0.9000): do not edit by hand
+% Generated by roxygen2 (4.1.0): do not edit by hand
 % Please edit documentation in R/streamgraph.R
 \name{sg_fill_tableau}
 \alias{sg_fill_tableau}
diff --git a/man/sg_legend.Rd b/man/sg_legend.Rd
index ba49bcc..4507e86 100644
--- a/man/sg_legend.Rd
+++ b/man/sg_legend.Rd
@@ -1,4 +1,4 @@
-% Generated by roxygen2 (4.1.0.9000): do not edit by hand
+% Generated by roxygen2 (4.1.0): do not edit by hand
 % Please edit documentation in R/streamgraph.R
 \name{sg_legend}
 \alias{sg_legend}
diff --git a/man/streamgraph-exports.Rd b/man/streamgraph-exports.Rd
index fd4ef16..a0415ea 100644
--- a/man/streamgraph-exports.Rd
+++ b/man/streamgraph-exports.Rd
@@ -1,4 +1,4 @@
-% Generated by roxygen2 (4.1.0.9000): do not edit by hand
+% Generated by roxygen2 (4.1.0): do not edit by hand
 % Please edit documentation in R/streamgraph-package.R
 \name{streamgraph-exports}
 \alias{\%>\%}
diff --git a/man/streamgraph-package.Rd b/man/streamgraph-package.Rd
index 040a4e9..0f3d5d3 100644
--- a/man/streamgraph-package.Rd
+++ b/man/streamgraph-package.Rd
@@ -1,4 +1,4 @@
-% Generated by roxygen2 (4.1.0.9000): do not edit by hand
+% Generated by roxygen2 (4.1.0): do not edit by hand
 % Please edit documentation in R/streamgraph-package.R
 \docType{package}
 \name{streamgraph-package}
diff --git a/man/streamgraph.Rd b/man/streamgraph.Rd
index 6345bb8..5839448 100644
--- a/man/streamgraph.Rd
+++ b/man/streamgraph.Rd
@@ -1,4 +1,4 @@
-% Generated by roxygen2 (4.1.0.9000): do not edit by hand
+% Generated by roxygen2 (4.1.0): do not edit by hand
 % Please edit documentation in R/streamgraph.R
 \name{streamgraph}
 \alias{streamgraph}
diff --git a/man/streamgraphOutput.Rd b/man/streamgraphOutput.Rd
index e5d379e..df35622 100644
--- a/man/streamgraphOutput.Rd
+++ b/man/streamgraphOutput.Rd
@@ -1,4 +1,4 @@
-% Generated by roxygen2 (4.1.0.9000): do not edit by hand
+% Generated by roxygen2 (4.1.0): do not edit by hand
 % Please edit documentation in R/streamgraph.R
 \name{streamgraphOutput}
 \alias{streamgraphOutput}