diff --git a/DESCRIPTION b/DESCRIPTION
index c544f034a74704b32dcf779c1fa6bd9b1afb6400..436a1774045333071354d2a03e35d206cb752fa1 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,8 +1,8 @@
 Package: akima
-Version: 0.3-1
+Version: 0.3-2
 Title: Interpolation of irregularly spaced data
-Author: Fortran code by H. Akima.
- R port by Albrecht Gebhardt <albrecht.gebhardt@uni-klu.ac.at>.
+Author: Fortran code by H. Akima
+ R port by Albrecht Gebhardt <albrecht.gebhardt@uni-klu.ac.at>
 Maintainer: Albrecht Gebhardt <albrecht.gebhardt@uni-klu.ac.at>
 Description: Linear or cubic spline interpolation for irregular gridded data
 License: Fortran code: ACM, free for non-commercial use, R functions GPL
diff --git a/man/interp.Rd b/man/interp.Rd
index 276eb2430014d2985a0df15f336de8bfc6e9a46e..b273b1805fced52ddf3ff47f8fde34d099a4d0b1 100644
--- a/man/interp.Rd
+++ b/man/interp.Rd
@@ -6,9 +6,9 @@
 \alias{interp.new}
 \alias{interp.old}
 \usage{
-interp(x, y, z, xo=<<see below>>, yo=<<see below>>, ncp=0, extrap=F)
-interp.old(x, y, z, xo=<<see below>>, yo=<<see below>>, ncp=0, extrap=F)
-interp.new(x, y, z, xo=<<see below>>, yo=<<see below>>, ncp=0, extrap=F)
+interp(x, y, z, xo=<<see below>>, yo=<<see below>>, ncp=0, extrap=FALSE, duplicate = "error", dupfun = NULL)
+interp.old(x, y, z, xo=<<see below>>, yo=<<see below>>, ncp=0, extrap=FALSE, duplicate = "error", dupfun = NULL)
+interp.new(x, y, z, xo=<<see below>>, yo=<<see below>>, linear=FALSE, ncp=NULL, extrap=FALSE, duplicate = "error", dupfun = NULL)
 }
 \arguments{
   \item{x}{
@@ -46,6 +46,7 @@ interp.new(x, y, z, xo=<<see below>>, yo=<<see below>>, ncp=0, extrap=F)
     used (\code{extrap=F}, the default), \code{yo} should have a range that is
     close to or inside of the range of \code{y} for the results to be meaningful.
   }
+  \item{linear}{logical, switch to linear interpolation in \code{interp.new}}
   \item{ncp}{
     number of additional points to be used in computing partial
     derivatives at each data point.  
diff --git a/man/interpp.Rd b/man/interpp.Rd
index a0129d2efc615bfbf21d4aef4cd7a236261c67e3..a796dab319d6e43f9e95d197ab9ae23178ea1b6d 100644
--- a/man/interpp.Rd
+++ b/man/interpp.Rd
@@ -6,7 +6,7 @@
 \alias{interpp.old}
 \alias{interpp.new}
 \usage{
-interpp(x, y, z, xo, yo, ncp=0, extrap=F)
+interpp(x, y, z, xo, yo, ncp=0, extrap=F, duplicate = "error", dupfun = NULL)
 }
 \arguments{
   \item{x}{