diff --git a/.Rbuildignore b/.Rbuildignore
index e328b3323915abfd17f1d36d9b90a3209afdaf37..b16ec94d681abaaae0dccc20cbe0a713efa1a45e 100644
--- a/.Rbuildignore
+++ b/.Rbuildignore
@@ -10,3 +10,4 @@
 ^data-raw$
 ^images$
 ^cran-comments\.md$
+^win-builder_results$
diff --git a/DESCRIPTION b/DESCRIPTION
index 852126341551b340a686d2a1ffa7d52efbb7f563..8763904cde69448af768b49ff5e8cae5cacfe9d7 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -2,7 +2,7 @@ Package: stressaddition
 Type: Package
 Title: Modelling Tri-Phasic Concentration-Response Relationships
 Version: 3.0.1
-Date: 2020-07-28
+Date: 2020-07-29
 Authors@R: c(person("Sebastian", 
                     "Henz", 
                     role = c("aut", "cre"), 
diff --git a/NEWS.md b/NEWS.md
index 39cb364678e5eaaf32c5ed262e0171460922c21d..e2205a25fc7c86ac23804a78762f7aa8e8438de2 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,5 +1,5 @@
 # stressaddition 3.0.1
-* Add missing return values in documentation to comply with CRAN policies.
+* Add missing return values in documentation to comply with CRAN Repository Policy.
 * Add a link to the paper in the description file.
 
 # stressaddition 3.0.0
diff --git a/win-builder_results/3.0.0/00check.log b/win-builder_results/3.0.0/00check.log
new file mode 100644
index 0000000000000000000000000000000000000000..f9021d206fb0fcefff1087234ad1b99e26756383
--- /dev/null
+++ b/win-builder_results/3.0.0/00check.log
@@ -0,0 +1,84 @@
+* using log directory 'd:/RCompile/CRANguest/R-devel/stressaddition.Rcheck'
+* using R Under development (unstable) (2020-07-28 r78930)
+* using platform: x86_64-w64-mingw32 (64-bit)
+* using session charset: ISO8859-1
+* checking for file 'stressaddition/DESCRIPTION' ... OK
+* checking extension type ... Package
+* this is package 'stressaddition' version '3.0.0'
+* package encoding: UTF-8
+* checking CRAN incoming feasibility ... NOTE
+Maintainer: 'Sebastian Henz <sebastian.henz@ufz.de>'
+
+New submission
+
+Possibly mis-spelled words in DESCRIPTION:
+  Phasic (3:22)
+  Tri (3:18)
+  phasic (23:12)
+  stressor (24:55)
+  toxicant (23:73)
+  toxicants (25:9)
+  tri (23:8)
+* checking package namespace information ... OK
+* checking package dependencies ... OK
+* checking if this is a source package ... OK
+* checking if there is a namespace ... OK
+* checking for hidden files and directories ... OK
+* checking for portable file names ... OK
+* checking whether package 'stressaddition' can be installed ... OK
+* checking installed package size ... OK
+* checking package directory ... OK
+* checking for future file timestamps ... OK
+* checking DESCRIPTION meta-information ... OK
+* checking top-level files ... OK
+* checking for left-over files ... OK
+* checking index information ... OK
+* checking package subdirectories ... OK
+* checking R files for non-ASCII characters ... OK
+* checking R files for syntax errors ... OK
+* loading checks for arch 'i386'
+** checking whether the package can be loaded ... OK
+** checking whether the package can be loaded with stated dependencies ... OK
+** checking whether the package can be unloaded cleanly ... OK
+** checking whether the namespace can be loaded with stated dependencies ... OK
+** checking whether the namespace can be unloaded cleanly ... OK
+** checking loading without being on the library search path ... OK
+** checking use of S3 registration ... OK
+* loading checks for arch 'x64'
+** checking whether the package can be loaded ... OK
+** checking whether the package can be loaded with stated dependencies ... OK
+** checking whether the package can be unloaded cleanly ... OK
+** checking whether the namespace can be loaded with stated dependencies ... OK
+** checking whether the namespace can be unloaded cleanly ... OK
+** checking loading without being on the library search path ... OK
+** checking use of S3 registration ... OK
+* checking dependencies in R code ... OK
+* checking S3 generic/method consistency ... OK
+* checking replacement functions ... OK
+* checking foreign function calls ... OK
+* checking R code for possible problems ... [8s] OK
+* checking Rd files ... OK
+* checking Rd metadata ... OK
+* checking Rd line widths ... OK
+* checking Rd cross-references ... OK
+* checking for missing documentation entries ... OK
+* checking for code/documentation mismatches ... OK
+* checking Rd \usage sections ... OK
+* checking Rd contents ... OK
+* checking for unstated dependencies in examples ... OK
+* checking contents of 'data' directory ... OK
+* checking data for non-ASCII characters ... OK
+* checking data for ASCII and uncompressed saves ... OK
+* checking examples ...
+** running examples for arch 'i386' ... [9s] OK
+** running examples for arch 'x64' ... [10s] OK
+* checking for unstated dependencies in 'tests' ... OK
+* checking tests ...
+** running tests for arch 'i386' ... [13s] OK
+  Running 'testthat.R' [12s]
+** running tests for arch 'x64' ... [12s] OK
+  Running 'testthat.R' [12s]
+* checking PDF version of manual ... OK
+* checking for detritus in the temp directory ... OK
+* DONE
+Status: 1 NOTE
diff --git a/win-builder_results/3.0.0/00install.out b/win-builder_results/3.0.0/00install.out
new file mode 100644
index 0000000000000000000000000000000000000000..87a6ebc9c26fd1177b5ad8f58ae49d81fc15d3e7
--- /dev/null
+++ b/win-builder_results/3.0.0/00install.out
@@ -0,0 +1,20 @@
+* installing *source* package 'stressaddition' ...
+** using staged installation
+** R
+** data
+*** moving datasets to lazyload DB
+** inst
+** byte-compile and prepare package for lazy loading
+** help
+*** installing help indices
+** building package indices
+** testing if installed package can be loaded from temporary location
+*** arch - i386
+*** arch - x64
+** testing if installed package can be loaded from final location
+*** arch - i386
+*** arch - x64
+** testing if installed package keeps a record of temporary installation path
+* MD5 sums
+packaged installation of 'stressaddition' as stressaddition_3.0.0.zip
+* DONE (stressaddition)
diff --git a/win-builder_results/3.0.1/00check.log b/win-builder_results/3.0.1/00check.log
new file mode 100644
index 0000000000000000000000000000000000000000..a3937f63aa0ad11ff69668f8862b98fcbc77a10a
--- /dev/null
+++ b/win-builder_results/3.0.1/00check.log
@@ -0,0 +1,87 @@
+* using log directory 'd:/RCompile/CRANguest/R-devel/stressaddition.Rcheck'
+* using R Under development (unstable) (2020-07-28 r78930)
+* using platform: x86_64-w64-mingw32 (64-bit)
+* using session charset: ISO8859-1
+* checking for file 'stressaddition/DESCRIPTION' ... OK
+* checking extension type ... Package
+* this is package 'stressaddition' version '3.0.1'
+* package encoding: UTF-8
+* checking CRAN incoming feasibility ... NOTE
+Maintainer: 'Sebastian Henz <sebastian.henz@ufz.de>'
+
+New submission
+
+Possibly mis-spelled words in DESCRIPTION:
+  Liess (25:24)
+  Phasic (3:22)
+  Tri (3:18)
+  al (25:33)
+  et (25:30)
+  phasic (23:12)
+  stressor (24:55)
+  toxicant (23:73)
+  toxicants (25:9)
+  tri (23:8)
+* checking package namespace information ... OK
+* checking package dependencies ... OK
+* checking if this is a source package ... OK
+* checking if there is a namespace ... OK
+* checking for hidden files and directories ... OK
+* checking for portable file names ... OK
+* checking whether package 'stressaddition' can be installed ... OK
+* checking installed package size ... OK
+* checking package directory ... OK
+* checking for future file timestamps ... OK
+* checking DESCRIPTION meta-information ... OK
+* checking top-level files ... OK
+* checking for left-over files ... OK
+* checking index information ... OK
+* checking package subdirectories ... OK
+* checking R files for non-ASCII characters ... OK
+* checking R files for syntax errors ... OK
+* loading checks for arch 'i386'
+** checking whether the package can be loaded ... OK
+** checking whether the package can be loaded with stated dependencies ... OK
+** checking whether the package can be unloaded cleanly ... OK
+** checking whether the namespace can be loaded with stated dependencies ... OK
+** checking whether the namespace can be unloaded cleanly ... OK
+** checking loading without being on the library search path ... OK
+** checking use of S3 registration ... OK
+* loading checks for arch 'x64'
+** checking whether the package can be loaded ... OK
+** checking whether the package can be loaded with stated dependencies ... OK
+** checking whether the package can be unloaded cleanly ... OK
+** checking whether the namespace can be loaded with stated dependencies ... OK
+** checking whether the namespace can be unloaded cleanly ... OK
+** checking loading without being on the library search path ... OK
+** checking use of S3 registration ... OK
+* checking dependencies in R code ... OK
+* checking S3 generic/method consistency ... OK
+* checking replacement functions ... OK
+* checking foreign function calls ... OK
+* checking R code for possible problems ... [8s] OK
+* checking Rd files ... OK
+* checking Rd metadata ... OK
+* checking Rd line widths ... OK
+* checking Rd cross-references ... OK
+* checking for missing documentation entries ... OK
+* checking for code/documentation mismatches ... OK
+* checking Rd \usage sections ... OK
+* checking Rd contents ... OK
+* checking for unstated dependencies in examples ... OK
+* checking contents of 'data' directory ... OK
+* checking data for non-ASCII characters ... OK
+* checking data for ASCII and uncompressed saves ... OK
+* checking examples ...
+** running examples for arch 'i386' ... [8s] OK
+** running examples for arch 'x64' ... [10s] OK
+* checking for unstated dependencies in 'tests' ... OK
+* checking tests ...
+** running tests for arch 'i386' ... [11s] OK
+  Running 'testthat.R' [11s]
+** running tests for arch 'x64' ... [13s] OK
+  Running 'testthat.R' [12s]
+* checking PDF version of manual ... OK
+* checking for detritus in the temp directory ... OK
+* DONE
+Status: 1 NOTE
diff --git a/win-builder_results/3.0.1/00install.out b/win-builder_results/3.0.1/00install.out
new file mode 100644
index 0000000000000000000000000000000000000000..6b8288290b9f0962d36d468ecc067fb31a47a021
--- /dev/null
+++ b/win-builder_results/3.0.1/00install.out
@@ -0,0 +1,20 @@
+* installing *source* package 'stressaddition' ...
+** using staged installation
+** R
+** data
+*** moving datasets to lazyload DB
+** inst
+** byte-compile and prepare package for lazy loading
+** help
+*** installing help indices
+** building package indices
+** testing if installed package can be loaded from temporary location
+*** arch - i386
+*** arch - x64
+** testing if installed package can be loaded from final location
+*** arch - i386
+*** arch - x64
+** testing if installed package keeps a record of temporary installation path
+* MD5 sums
+packaged installation of 'stressaddition' as stressaddition_3.0.1.zip
+* DONE (stressaddition)
diff --git a/win-builder_results/readme.md b/win-builder_results/readme.md
new file mode 100644
index 0000000000000000000000000000000000000000..51923e503b3a81a9d7e6e88e1d1b05c0aa02b528
--- /dev/null
+++ b/win-builder_results/readme.md
@@ -0,0 +1,9 @@
+Run `devtools::check_win_devel()` to check in the development version of R under windows. The results will be e-mailed to the address of the maintainer. In some cases it can take almost a day, so be patient. Then save 00check.log and 00install.out in this directory.
+
+
+This note here can be ignored:
+```
+* checking CRAN incoming feasibility ... NOTE
+Maintainer: 'Sebastian Henz <sebastian.henz@ufz.de>'
+```
+It just tells CRAN that it should only accept submissions from the maintainer's e-mail address. See https://stackoverflow.com/questions/23829978/checking-cran-incoming-feasibility-note-maintainer