diff --git a/R/ebook.R b/R/ebook.R
index 809a6854..c9dc5855 100644
--- a/R/ebook.R
+++ b/R/ebook.R
@@ -54,13 +54,15 @@ epub_book <- function() {
     system.file(file.path("pandoc", "translations.lua"), package = "INBOmd")
   )
   validate_doi(ifelse(has_name(fm, "doi"), fm$doi, "1.1/1"))
-  if (has_name(fm, "public_report") && !fm$public_report) {
-    c(
-      nl = "onuitgeven rapport", en = "unpublished report",
-      fr = "rapport non publi\u00e9"
-    )[lang] |>
-      pandoc_variable_arg(name = "doi") |>
-      c(pandoc_variable_arg("nocolophon", "true")) |>
+  if (
+    !has_name(fm, "doi") && has_name(fm, "public_report") && !fm$public_report
+  ) {
+    Sys.time() |>
+      format("%Y-%m-%d %H:%M:%S") |>
+      c(fm$reportnr) |>
+      tail(1) |>
+      pandoc_variable_arg(name = "pagefootmessage") |>
+      c(pandoc_variable_arg("internal", "true")) |>
       c(pandoc_args) -> pandoc_args
   } else {
     c(fm$doi, "!!! missing DOI !!!") |>
diff --git a/R/gitbook.R b/R/gitbook.R
index 3ddd699f..a6af9a26 100644
--- a/R/gitbook.R
+++ b/R/gitbook.R
@@ -21,10 +21,6 @@ gitbook <- function(code_folding = c("none", "show", "hide")) {
     yaml_front_matter() |>
     validate_persons(reviewer = TRUE) |>
     validate_rightsholder() -> fm
-  assert_that(
-    !has_name(fm, "nocolophon"), msg = "Legacy option `nocolophon` detected.
-    Please use the `public_report` option."
-  )
   style <- ifelse(has_name(fm, "style"), fm$style, "INBO")
   assert_that(length(style) == 1)
   assert_that(
@@ -67,13 +63,20 @@ gitbook <- function(code_folding = c("none", "show", "hide")) {
     system.file(file.path("pandoc", "translations.lua"), package = "INBOmd")
   )
   validate_doi(ifelse(has_name(fm, "doi"), fm$doi, "1.1/1"))
-  if (has_name(fm, "public_report") && !fm$public_report) {
-    c(
-      nl = "onuitgeven rapport", en = "unpublished report",
-      fr = "rapport non publi\u00e9"
-    )[lang] |>
+  if (
+    !has_name(fm, "doi") && has_name(fm, "public_report") && !fm$public_report
+  ) {
+    Sys.time() |>
+      format("%Y-%m-%d %H:%M:%S") |>
+      c(fm$reportnr) |>
+      tail(1) |>
+      pandoc_variable_arg(name = "pagefootmessage") |>
+      c(pandoc_variable_arg("internal", "true")) |>
+      c(pandoc_args) -> pandoc_args
+  } else {
+    c(fm$doi, "!!! missing DOI !!!") |>
+      head(1) |>
       pandoc_variable_arg(name = "doi") |>
-      c(pandoc_variable_arg("nocolophon", "true")) |>
       c(pandoc_args) -> pandoc_args
   }
 
diff --git a/R/pdf_report.R b/R/pdf_report.R
index a11b2c0b..2555eac7 100644
--- a/R/pdf_report.R
+++ b/R/pdf_report.R
@@ -25,9 +25,10 @@ pdf_report <- function(
     yaml_front_matter() |>
     validate_persons(reviewer = TRUE) |>
     validate_rightsholder() -> fm
-  assert_that(
-    !has_name(fm, "nocolophon"), msg = "Legacy option `nocolophon` detected.
-    Please use the `public_report` option."
+  stopifnot(
+    "`internal` option in yaml is not allowed" = !has_name(fm, "internal"),
+    "`pagefootmessage` option in yaml is not allowed" =
+      !has_name(fm, "pagefootmessage")
   )
   floatbarrier <- ifelse(has_name(fm, "floatbarrier"), fm$floatbarrier, NA)
   assert_that(length(floatbarrier) == 1)
@@ -104,13 +105,15 @@ pdf_report <- function(
   )
   args <- args[args != ""]
   validate_doi(ifelse(has_name(fm, "doi"), fm$doi, "1.1/1"))
-  if (has_name(fm, "public_report") && !fm$public_report) {
-    c(
-      nl = "onuitgeven rapport", en = "unpublished report",
-      fr = "rapport non publi\u00e9"
-    )[lang] |>
-      pandoc_variable_arg(name = "doi") |>
-      c(pandoc_variable_arg("nocolophon", "true")) |>
+  if (
+    !has_name(fm, "doi") && has_name(fm, "public_report") && !fm$public_report
+  ) {
+    Sys.time() |>
+      format("%Y-%m-%d %H:%M:%S") |>
+      c(fm$reportnr) |>
+      tail(1) |>
+      pandoc_variable_arg(name = "pagefootmessage") |>
+      c(pandoc_variable_arg("internal", "true")) |>
       c(args) -> args
   } else {
     c(fm$doi, "!!! missing DOI !!!") |>
@@ -119,7 +122,6 @@ pdf_report <- function(
       c(args) -> args
   }
 
-
   if (has_name(fm, "lof") && isTRUE(fm$lof)) {
     args <- c(args, pandoc_variable_arg("lof", TRUE))
   }
diff --git a/inst/local_tex/tex/latex/inborapport_2015/flanders_report.sty b/inst/local_tex/tex/latex/inborapport_2015/flanders_report.sty
index f8da7f1e..eb8c246a 100644
--- a/inst/local_tex/tex/latex/inborapport_2015/flanders_report.sty
+++ b/inst/local_tex/tex/latex/inborapport_2015/flanders_report.sty
@@ -14,8 +14,12 @@
 \fancyhead{}
 \fancyfoot{}
 \fancyfoot[LO, RE]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\href{https://www.vlaanderen.be/en}{www.vlaanderen.be}}}}
-\fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \pagename \textbf{ \thepage} / \textbf{\pageref*{LastPage}}}}
-\fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\@doi}}}
+\fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \pagename~\textbf{\thepage}~/~\textbf{\pageref*{LastPage}}}}
+\ifnum \@public = 0
+\fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@pagefootmessage}}
+\else
+\fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@doi}}
+\fi
 \renewcommand{\footrule}{\vbox to 8pt{\hbox
 to\headwidth{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont\leaders\hbox{/}\hfill}\vss}}
 \renewcommand{\headrulewidth}{0pt}
@@ -25,8 +29,12 @@ to\headwidth{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}
   \fancyhead{}
   \fancyfoot{}
   \fancyfoot[LO, RE]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\href{https://www.vlaanderen.be/en}{www.vlaanderen.be}}}}
-  \fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\@doi}}}
-  \fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \pagename \textbf{ \thepage} / \textbf{\pageref*{LastPage}}}}
+  \ifnum \@public = 0
+  \fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@pagefootmessage}}
+  \else
+  \fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@doi}}
+  \fi
+  \fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \pagename~\textbf{ \thepage}~/~\textbf{\pageref*{LastPage}}}}
   \renewcommand{\headrulewidth}{0pt}
   \renewcommand{\footrulewidth}{0pt}
 }
diff --git a/inst/local_tex/tex/latex/inborapport_2015/flanders_report_generic.sty b/inst/local_tex/tex/latex/inborapport_2015/flanders_report_generic.sty
index 0dad1d8b..457e4979 100644
--- a/inst/local_tex/tex/latex/inborapport_2015/flanders_report_generic.sty
+++ b/inst/local_tex/tex/latex/inborapport_2015/flanders_report_generic.sty
@@ -23,9 +23,15 @@
 \def\subtitle#1{\def\@subtitle{#1}}
 \subtitle{}
 
+\def\pagefootmessage#1{\def\@pagefootmessage{#1}}
+\pagefootmessage{}
+
 \def\colophon#1{\def\@colophon{#1}}
 \colophon{1}
 
+\def\public#1{\def\@public{#1}}
+\public{1}
+
 \def\colofonauthor#1{\def\@colofonauthor{#1}}
 \colofonauthor{}
 
@@ -501,6 +507,15 @@
 \addto\extrasfrench{%
   \def\cfseries{Rapports de \cfinbo}%
 }
+\addto\extrasdutch{%
+  \def\cfiseries{Interne rapporten van het \cfinbo}%
+}
+\addto\extrasenglish{%
+  \def\cfiseries{Internal reports of the \cfinbo}%
+}
+\addto\extrasfrench{%
+  \def\cfiseries{Rapports internes de \cfinbo}%
+}
 \addto\extrasdutch{%
   \def\cfcity{Brussel}%
 }
@@ -591,11 +606,18 @@
 
       \textbf{e-mail:} \\ \@corresponding
 
+    \ifnum \@public = 0
+      \textbf{\cfcitation} \\ \@shortauthor~(\@year). \@citetitle. \cfiseries~\@year~(\@reportnr). \cfinbo, \cfcity.
+
+      \textbf{\cfiseries~\@year~(\@reportnr)}
+    \else
       \textbf{\cfcitation} \\ \@shortauthor~(\@year). \@citetitle. \cfseries~\@year~(\@reportnr). \cfinbo, \cfcity. DOI: \@doi
 
       \textbf{\@depotnr} \\
       \textbf{\cfseries~\@year~(\@reportnr)} \\
       \textbf{ISSN: 1782-9054}
+    \fi
+
 
       \textbf{\cfvu} \\ Maurice Hoffmann
 
@@ -635,7 +657,9 @@
       \vspace{144pt}
 
     \hspace{10mm}\parbox[t]{140mm}{
-      \fontsize{\fontsizeordernr}{\fontsizeordernrinter}\selectfont \raggedright \mainColourURL{\@doi} \\ \@ordernumber
+      \fontsize{\fontsizeordernr}{\fontsizeordernrinter}\selectfont \raggedright
+      \ifnum \@public > 1 \@doi \\ \fi
+      \@ordernumber
   }
 
   \vfill
diff --git a/inst/local_tex/tex/latex/inborapport_2015/flandre_report.sty b/inst/local_tex/tex/latex/inborapport_2015/flandre_report.sty
index 9e36ed42..90ccbbf0 100644
--- a/inst/local_tex/tex/latex/inborapport_2015/flandre_report.sty
+++ b/inst/local_tex/tex/latex/inborapport_2015/flandre_report.sty
@@ -14,8 +14,12 @@
 \fancyhead{}
 \fancyfoot{}
 \fancyfoot[LO, RE]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\href{https://www.vlaanderen.be/fr}{www.vlaanderen.be}}}}
-\fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \pagename \textbf{ \thepage} / \textbf{\pageref*{LastPage}}}}
-\fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\@doi}}}
+\fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \pagename~\textbf{\thepage}~/~\textbf{\pageref*{LastPage}}}}
+\ifnum \@public = 0
+\fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@pagefootmessage}}
+\else
+\fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@doi}}
+\fi
 \renewcommand{\footrule}{\vbox to 8pt{\hbox
 to\headwidth{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont\leaders\hbox{/}\hfill}\vss}}
 \renewcommand{\headrulewidth}{0pt}
@@ -25,8 +29,12 @@ to\headwidth{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}
   \fancyhead{}
   \fancyfoot{}
   \fancyfoot[LO, RE]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\href{https://www.vlaanderen.be/fr}{www.vlaanderen.be}}}}
-  \fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\@doi}}}
-  \fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \pagename \textbf{ \thepage} / \textbf{\pageref*{LastPage}}}}
+  \ifnum \@public = 0
+  \fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@pagefootmessage}}
+  \else
+  \fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@doi}}
+  \fi
+  \fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \pagename~\textbf{\thepage}~/~\textbf{\pageref*{LastPage}}}}
   \renewcommand{\headrulewidth}{0pt}
   \renewcommand{\footrulewidth}{0pt}
 }
diff --git a/inst/local_tex/tex/latex/inborapport_2015/inbo_report.sty b/inst/local_tex/tex/latex/inborapport_2015/inbo_report.sty
index b533acef..578e47f6 100644
--- a/inst/local_tex/tex/latex/inborapport_2015/inbo_report.sty
+++ b/inst/local_tex/tex/latex/inborapport_2015/inbo_report.sty
@@ -14,8 +14,12 @@
 \fancyhead{}
 \fancyfoot{}
 \fancyfoot[LO, RE]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\href{https://www.vlaanderen.be/inbo}{vlaanderen.be/inbo}}}}
-\fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont Pagina \textbf{\thepage} van \textbf{\pageref*{LastPage}}}}
-\fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\@doi}}}
+\fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont Pagina~\textbf{\thepage}~van~\textbf{\pageref*{LastPage}}}}
+\ifnum \@public = 0
+\fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@pagefootmessage}}
+\else
+\fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@doi}}
+\fi
 \renewcommand{\footrule}{\vbox to 8pt{\hbox
 to\headwidth{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont\leaders\hbox{/}\hfill}\vss}}
 \renewcommand{\headrulewidth}{0pt}
@@ -25,8 +29,12 @@ to\headwidth{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}
   \fancyhead{}
   \fancyfoot{}
   \fancyfoot[LO, RE]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\href{https://www.vlaanderen.be/inbo}{vlaanderen.be/inbo}}}}
-  \fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\@doi}}}
-  \fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont Pagina \textbf{\thepage} van \textbf{\pageref*{LastPage}}}}
+  \ifnum \@public = 0
+  \fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@pagefootmessage}}
+  \else
+  \fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@doi}}
+  \fi
+  \fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont Pagina~\textbf{\thepage}~van~\textbf{\pageref*{LastPage}}}}
   \renewcommand{\headrulewidth}{0pt}
   \renewcommand{\footrulewidth}{0pt}
 }
diff --git a/inst/local_tex/tex/latex/inborapport_2015/vlaanderen_report.sty b/inst/local_tex/tex/latex/inborapport_2015/vlaanderen_report.sty
index fbf52c4a..67a1b28f 100644
--- a/inst/local_tex/tex/latex/inborapport_2015/vlaanderen_report.sty
+++ b/inst/local_tex/tex/latex/inborapport_2015/vlaanderen_report.sty
@@ -13,8 +13,12 @@
 \fancyhead{}
 \fancyfoot{}
 \fancyfoot[LO, RE]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\href{https://www.vlaanderen.be}{www.vlaanderen.be}}}}
-\fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont Pagina \textbf{\thepage} van \textbf{\pageref*{LastPage}}}}
-\fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\@doi}}}
+\fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont Pagina~\textbf{\thepage}~van~\textbf{\pageref*{LastPage}}}}
+\ifnum \@public = 0
+\fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@pagefootmessage}}
+\else
+\fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@doi}}
+\fi
 \renewcommand{\footrule}{\vbox to 8pt{\hbox
 to\headwidth{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont\leaders\hbox{/}\hfill}\vss}}
 \renewcommand{\headrulewidth}{0pt}
@@ -24,8 +28,12 @@ to\headwidth{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}
   \fancyhead{}
   \fancyfoot{}
   \fancyfoot[LO, RE]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\href{https://www.vlaanderen.be}{www.vlaanderen.be}}}}
-  \fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \mainColourURL{\@doi}}}
-  \fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont Pagina \textbf{\thepage} van \textbf{\pageref*{LastPage}}}}
+  \ifnum \@public = 0
+  \fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@pagefootmessage}}
+  \else
+  \fancyfoot[CE, CO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont \@doi}}
+  \fi
+  \fancyfoot[LE, RO]{{\color{main.colour}\fontsize{\fontsizefooter}{\fontsizefooterinter}\selectfont Pagina~\textbf{\thepage}~van~\textbf{\pageref*{LastPage}}}}
   \renewcommand{\headrulewidth}{0pt}
   \renewcommand{\footrulewidth}{0pt}
 }
diff --git a/inst/pandoc/inbo_rapport.tex b/inst/pandoc/inbo_rapport.tex
index 682f6b69..a0ad2fe6 100644
--- a/inst/pandoc/inbo_rapport.tex
+++ b/inst/pandoc/inbo_rapport.tex
@@ -117,6 +117,8 @@
 
 $if(hyphentation)$\hyphenation{$hyphentation$}$endif$
 $if(nocolophon)$\colophon{0}$else$\colophon{1}$endif$
+$if(internal)$\public{0}$else$\public{1}$endif$
+$if(pagefootmessage)$\pagefootmessage{$pagefootmessage$}$endif$
 
 $for(header-includes)$
 $header-includes$
diff --git a/inst/pandoc/translations.lua b/inst/pandoc/translations.lua
index 41edff6f..2b6048ad 100644
--- a/inst/pandoc/translations.lua
+++ b/inst/pandoc/translations.lua
@@ -12,6 +12,7 @@ local function translation(lang)
       cover = "Foto cover",
       depotnr = "Depotnummer",
       export = "Exporteer referentie als",
+      iseries = "Interne rapporten van het",
       license_pre = "Dit werk valt onder een",
       license = "Creative Commons Naamsvermelding 4.0 Internationaal-licentie",
       location = "Vestiging",
@@ -20,7 +21,6 @@ local function translation(lang)
       ordernr = "Opdrachtnummer",
       reviewer = "Nagelezen door",
       series = "Rapporten van het",
-      unpublished = "Onuitgegeven rapport",
       vu = "Verantwoordelijke uitgever",
       year = "Gepubliceerd in"
     }
@@ -35,6 +35,7 @@ local function translation(lang)
       country = ", Belgique",
       cover = "Photo de couverture",
       depotnr = "Numéro de dépôt",
+      iseries = "Rapports internes de",
       export = "Exporter la référence à",
       license_pre = "Ce rapport est sous licence",
       license = "Creative Commons Attribution 4.0 International Licence",
@@ -44,7 +45,6 @@ local function translation(lang)
       ordernr = "Numéro de commande",
       reviewer = "Examiné par",
       series = "Rapports de",
-      unpublished = "Rapport non publié",
       vu = "Éditeur responsable",
       year = "Publié en"
     }
@@ -60,6 +60,7 @@ local function translation(lang)
       country = ", Belgium",
       depotnr = "Deposit number",
       export = "Export reference to",
+      iseries = "Internal reports of the",
       license_pre = "This work is licensed under a",
       license = "Creative Commons Attribution 4.0 International License",
       location = "Location",
@@ -68,7 +69,6 @@ local function translation(lang)
       ordernr = "Order number",
       reviewer = "Reviewed by",
       series = "Reports of the",
-      unpublished = "Unpublished report",
       vu = "Responsible publisher",
       year = "Published during"
     }
diff --git a/inst/template/report.epub3 b/inst/template/report.epub3
index b5dbae2e..f2564e10 100644
--- a/inst/template/report.epub3
+++ b/inst/template/report.epub3
@@ -67,7 +67,6 @@ $if(titlepage)$
     <h4 class ="ordernr">$ordernr$</h4>
   $endif$
   $if(nocolophon)$
-    <h4>$translation.unpublished$</h4>
   $else$
   <h1>$translation.colophon$</h1>
   $if(reviewer)$
@@ -107,7 +106,7 @@ $if(titlepage)$
   $else$
     <h1 class = "missing">!!!! ONTBREKEND: year !!!!</h1>
   $endif$
-  $title$$if(subtitle)$. $substitle$$endif$. $translation.series$ $translation.name$
+  $title$$if(subtitle)$. $substitle$$endif$. $if(internal)$$translation.iseries$$else$$translation.series$$endif$ $translation.name$
   $if(year)$
     $year$
   $endif$
@@ -116,18 +115,23 @@ $if(titlepage)$
   $else$
     <h1 class = "missing">!!!! ONTBREKEND: reportnr !!!!</h1>
   $endif$
-  $translation.name$, $translation.brussels$. DOI:
-  $if(doi)$
-    <a class="doi" href="#">$doi$</a>
-  $else$
-    <h1 class = "missing">!!!! ONTBREKEND: doi !!!!</h1>
+  $translation.name$, $translation.brussels$.$if(internal)$$else$ DOI:
+    $if(doi)$
+      <a class="doi" href="#">$doi$</a>
+    $else$
+      <h1 class = "missing">!!!! ONTBREKEND: doi !!!!</h1>
+    $endif$
   $endif$
-  $if(depotnr)$
-    <p><b>$depotnr$</b><br>
+  $if(internal)$
+    <p><b>$translation.iseries$ $translation.name$
   $else$
-    <h1 class = "missing">!!!! ONTBREKEND: depotnr !!!!</h1>
+    $if(depotnr)$
+      <p><b>$depotnr$</b><br>
+    $else$
+      <h1 class = "missing">!!!! ONTBREKEND: depotnr !!!!</h1>
+    $endif$
+    <b>$translation.series$ $translation.name$
   $endif$
-  <b>$translation.series$ $translation.name$
   $if(year)$
     $year$
   $endif$
@@ -135,7 +139,7 @@ $if(titlepage)$
     ($reportnr$)
   $endif$
   </b><br>
-  <b>ISSN: 1782‐9054</b>
+$if(internal)$$else$  <b>ISSN: 1782‐9054</b>$endif$
 
   <p><b>$translation.vu$:</b><br>Maurice Hoffmann
 
diff --git a/inst/template/report.html b/inst/template/report.html
index 3412f4cb..75e337eb 100644
--- a/inst/template/report.html
+++ b/inst/template/report.html
@@ -131,7 +131,6 @@ <h4><a class="doi" href="https://doi.org/$doi$">$doi$</a></h4>
     <h4 class ="ordernr">$ordernr$</h4>
   $endif$
   $if(nocolophon)$
-    <h4>$translation.unpublished$</h4>
   $else$
     <h1>$translation.colophon$</h1>
     $if(reviewer)$
@@ -171,7 +170,7 @@ <h1 class = "missing">!!!! ONTBREKEND: shortauthor !!!!</h1>
     $else$
       <h1 class = "missing">!!!! ONTBREKEND: year !!!!</h1>
     $endif$
-    $title$$if(subtitle)$. $substitle$$endif$. $translation.series$ $translation.name$
+    $title$$if(subtitle)$. $substitle$$endif$. $if(internal)$$translation.iseries$$else$$translation.series$$endif$ $translation.name$
     $if(year)$
       $year$
     $endif$
@@ -180,11 +179,12 @@ <h1 class = "missing">!!!! ONTBREKEND: year !!!!</h1>
     $else$
       <h1 class = "missing">!!!! ONTBREKEND: reportnr !!!!</h1>
     $endif$
-    $translation.name$, $translation.brussels$. DOI:
-    $if(doi)$
-      <a class="doi" href="https://doi.org/$doi$">$doi$</a>
-    $else$
-      <h1 class = "missing">!!!! ONTBREKEND: doi !!!!</h1>
+    $translation.name$, $translation.brussels$. $if(internal)$$else$DOI:
+      $if(doi)$
+        <a class="doi" href="https://doi.org/$doi$">$doi$</a>
+      $else$
+        <h1 class = "missing">!!!! ONTBREKEND: doi !!!!</h1>
+      $endif$
     $endif$
     <br>$translation.export$ <button onclick="display_export('bibtex')" style = "color: #4183c4; background: #fff; border-width: 0px;">BibTex</button>
     <button onclick="display_export('RIS')" style = "color: #4183c4; background: #fff; border-width: 0px;">RIS</button>
@@ -209,7 +209,7 @@ <h1 class = "missing">!!!! ONTBREKEND: doi !!!!</h1>
   adress = {$if(geraardsbergen)$Geraardsbergen$else$$translation.brussels$$endif$$translation.country$},
   year = {$year$},
   number = {$year$ ($reportnr$)},
-  doi = {$doi$},
+$if(doi)$  doi = {$doi$},$endif$
   type = {techreport}
 }
 </pre>
@@ -218,11 +218,11 @@ <h1 class = "missing">!!!! ONTBREKEND: doi !!!!</h1>
 TY  - RPRT
 $for(author)$AU  - $author.name.family$, $author.name.given$$sep$ <br>$endfor$
 TI  - $title$$if(subtitle)$. $subtitle$$endif$
-DO  - $doi$
+$if(doi)$DO  - $doi$$endif$
 PB  - $translation.name$
 PP  - $if(geraardsbergen)$Geraardsbergen$else$$translation.brussels$$endif$$translation.country$
 PY  - $year$
-SN  - 1782-9054
+$if(internal)$$else$SN  - 1782-9054$endif$
 ER  -
 </pre>
 
@@ -245,16 +245,20 @@ <h1 class = "missing">!!!! ONTBREKEND: doi !!!!</h1>
 }
 </pre>
 
-    $if(depotnr)$
-      <p><b>$depotnr$</b><br>
+    $if(internal)$
+      <p><b>$translation.iseries$ $translation.name$
     $else$
-      <h1 class = "missing">!!!! ONTBREKEND: depotnr !!!!</h1>
+      $if(depotnr)$
+        <p><b>$depotnr$</b><br>
+      $else$
+        <h1 class = "missing">!!!! ONTBREKEND: depotnr !!!!</h1>
+      $endif$
+      <b>$translation.series$ $translation.name$
     $endif$
-    <b>$translation.series$ $translation.name$
     $if(year)$$year$$endif$
     $if(reportnr)$($reportnr$)$endif$
     </b><br>
-    <b>ISSN: 1782‐9054</b>
+    $if(internal)$$else$<b>ISSN: 1782‐9054</b>$endif$
 
     <p><b>$translation.vu$:</b><br>Maurice Hoffmann
 
@@ -337,7 +341,7 @@ <h1>
 $endfor$
 <p>&nbsp;</p>
 <p><a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons-Licentie" style="border-width:0" src="$csspath$/img/cc-by.svg" class = "cc"/></a>
-$shortauthor$ ($year$). <a href="https://doi.org/$doi$">$doi$</a>
+$shortauthor$ ($year$). $if(doi)$<a href="https://doi.org/$doi$">$doi$</a>$endif$
             </section>
         </div>
       </div>
diff --git a/man-roxygen/yaml_report.R b/man-roxygen/yaml_report.R
index 9cbf86b9..c7c3b978 100644
--- a/man-roxygen/yaml_report.R
+++ b/man-roxygen/yaml_report.R
@@ -9,9 +9,10 @@
 #'
 #' - `public_report`: A logical value indicating whether the report will be
 #'    published or not.
-#'    Setting `public_report: FALSE` will remove the colophon and replace the
-#'    DOI with a text indicating the report is unpublished.
+#'    Setting `public_report: FALSE` will alter the colophon.
 #'    Omitting `public_report` is equivalent to `public_report: TRUE`.
+#'    An internal report can't have a DOI.
+#'    Setting a DOI is equivalent to `public_report: TRUE`.
 #' - **`reviewer`**: names of the reviewers.
 #'   Use the same syntax as for the authors.
 #' - **`year`**: year of publication.
diff --git a/man/epub_book.Rd b/man/epub_book.Rd
index c6aa9fb2..1f840178 100644
--- a/man/epub_book.Rd
+++ b/man/epub_book.Rd
@@ -72,9 +72,10 @@ publication.
 \itemize{
 \item \code{public_report}: A logical value indicating whether the report will be
 published or not.
-Setting \code{public_report: FALSE} will remove the colophon and replace the
-DOI with a text indicating the report is unpublished.
+Setting \code{public_report: FALSE} will alter the colophon.
 Omitting \code{public_report} is equivalent to \code{public_report: TRUE}.
+An internal report can't have a DOI.
+Setting a DOI is equivalent to \code{public_report: TRUE}.
 \item \strong{\code{reviewer}}: names of the reviewers.
 Use the same syntax as for the authors.
 \item \strong{\code{year}}: year of publication.
diff --git a/man/gitbook.Rd b/man/gitbook.Rd
index ac590e86..a56dd372 100644
--- a/man/gitbook.Rd
+++ b/man/gitbook.Rd
@@ -79,9 +79,10 @@ publication.
 \itemize{
 \item \code{public_report}: A logical value indicating whether the report will be
 published or not.
-Setting \code{public_report: FALSE} will remove the colophon and replace the
-DOI with a text indicating the report is unpublished.
+Setting \code{public_report: FALSE} will alter the colophon.
 Omitting \code{public_report} is equivalent to \code{public_report: TRUE}.
+An internal report can't have a DOI.
+Setting a DOI is equivalent to \code{public_report: TRUE}.
 \item \strong{\code{reviewer}}: names of the reviewers.
 Use the same syntax as for the authors.
 \item \strong{\code{year}}: year of publication.
diff --git a/man/pdf_report.Rd b/man/pdf_report.Rd
index cd7f5382..10a06d5c 100644
--- a/man/pdf_report.Rd
+++ b/man/pdf_report.Rd
@@ -85,9 +85,10 @@ publication.
 \itemize{
 \item \code{public_report}: A logical value indicating whether the report will be
 published or not.
-Setting \code{public_report: FALSE} will remove the colophon and replace the
-DOI with a text indicating the report is unpublished.
+Setting \code{public_report: FALSE} will alter the colophon.
 Omitting \code{public_report} is equivalent to \code{public_report: TRUE}.
+An internal report can't have a DOI.
+Setting a DOI is equivalent to \code{public_report: TRUE}.
 \item \strong{\code{reviewer}}: names of the reviewers.
 Use the same syntax as for the authors.
 \item \strong{\code{year}}: year of publication.