diff --git a/man/est.incidence.by.Rd b/man/est.incidence.by.Rd
index 5b1fc006..92c08bca 100644
--- a/man/est.incidence.by.Rd
+++ b/man/est.incidence.by.Rd
@@ -21,7 +21,7 @@ est.incidence.by(
 )
 }
 \arguments{
-\item{pop_data}{\code{\link[=data.frame]{data.frame()}} with cross-sectional serology data per antibody and age, and additional columns to identify possible \code{strata}.}
+\item{pop_data}{\link{data.frame} with cross-sectional serology data per antibody and age, and additional columns to identify possible \code{strata}.}
 
 \item{curve_params}{a \code{\link[=data.frame]{data.frame()}} containing MCMC samples of parameters from the Bayesian posterior distribution of a longitudinal decay curve model. The parameter columns must be named:
 \itemize{
diff --git a/man/plot_curve_params_one_ab.Rd b/man/plot_curve_params_one_ab.Rd
index 868cb5f3..e5739f2d 100644
--- a/man/plot_curve_params_one_ab.Rd
+++ b/man/plot_curve_params_one_ab.Rd
@@ -48,14 +48,30 @@ plot_curve_params_one_ab(
 at the top level of the plot. You must supply \code{mapping} if there is no plot
 mapping.}
     \item{\code{data}}{Ignored by \code{stat_function()}, do not use.}
-    \item{\code{stat}}{The statistical transformation to use on the data for this
-layer, either as a \code{ggproto} \code{Geom} subclass or as a string naming the
-stat stripped of the \code{stat_} prefix (e.g. \code{"count"} rather than
-\code{"stat_count"})}
-    \item{\code{position}}{Position adjustment, either as a string naming the adjustment
-(e.g. \code{"jitter"} to use \code{position_jitter}), or the result of a call to a
-position adjustment function. Use the latter if you need to change the
-settings of the adjustment.}
+    \item{\code{stat}}{The statistical transformation to use on the data for this layer.
+When using a \verb{geom_*()} function to construct a layer, the \code{stat}
+argument can be used the override the default coupling between geoms and
+stats. The \code{stat} argument accepts the following:
+\itemize{
+\item A \code{Stat} ggproto subclass, for example \code{StatCount}.
+\item A string naming the stat. To give the stat as a string, strip the
+function name of the \code{stat_} prefix. For example, to use \code{stat_count()},
+give the stat as \code{"count"}.
+\item For more information and other ways to specify the stat, see the
+\link[ggplot2:layer_stats]{layer stat} documentation.
+}}
+    \item{\code{position}}{A position adjustment to use on the data for this layer. This
+can be used in various ways, including to prevent overplotting and
+improving the display. The \code{position} argument accepts the following:
+\itemize{
+\item The result of calling a position function, such as \code{position_jitter()}.
+This method allows for passing extra arguments to the position.
+\item A string naming the position adjustment. To give the position as a
+string, strip the function name of the \code{position_} prefix. For example,
+to use \code{position_jitter()}, give the position as \code{"jitter"}.
+\item For more information and other ways to specify the position, see the
+\link[ggplot2:layer_positions]{layer position} documentation.
+}}
     \item{\code{na.rm}}{If \code{FALSE}, the default, missing values are removed with
 a warning. If \code{TRUE}, missing values are silently removed.}
     \item{\code{show.legend}}{logical. Should this layer be included in the legends?