diff --git a/cnam/travaux/mémoire/build.py b/cnam/travaux/mémoire/build.py
index b11e0b1..9e89442 100755
--- a/cnam/travaux/mémoire/build.py
+++ b/cnam/travaux/mémoire/build.py
@@ -5,13 +5,14 @@ import shutil
 import subprocess
 import sys
 
-ENGLISH='en'
-FRENCH='fr'
+ENGLISH = 'en'
+FRENCH = 'fr'
 LANGUAGES = [ENGLISH, FRENCH]
 DOCUMENTS = [
     {ENGLISH: 'thesis', FRENCH: 'mémoire'},
-    # {ENGLISH: 'presentation', FRENCH: 'présentation'},
+    {ENGLISH: 'presentation', FRENCH: 'présentation'},
 ]
+MAIN = 'main'
 TMP = 'tmp'
 
 
@@ -24,37 +25,69 @@ def errun(command):
         command, stderr=subprocess.STDOUT)
 
 
-def build(sign):
+def build(directory, sign):
+    # temporary directory
+    tmp = os.path.join(directory, TMP)
+    # for each language
     for language in LANGUAGES:
+        # for each document
         for document in DOCUMENTS:
-            command = ['xelatex', '-output-directory', TMP, document[ENGLISH]]
-            if document['en'] == 'thesis':
+            # clean
+            os.chdir(directory)
+            wipe(tmp)
+            os.makedirs(tmp)
+            # move into document directory
+            os.chdir(document[ENGLISH])
+            # prepare build command
+            command = ['xelatex',
+                       '-output-directory', tmp,
+                       MAIN,
+                       ]
+            # if it's the main document
+            if document[ENGLISH] == 'thesis':
+                # pre build
                 run(command)
-                run(['makeglossaries', '-d', TMP, document[ENGLISH]])
+                # build glossaries
+                run(['makeglossaries', '-d', tmp, document[ENGLISH]])
+                # build references
                 run(['biber',
-                    '--input-directory', TMP,
-                    '--output-directory', TMP,
-                    document['en'],
-                ])
+                     '--input-directory', tmp,
+                     '--output-directory', tmp,
+                     MAIN,
+                     ])
+                # re build
                 run(command)
+            # final build
             run(command)
-            pdf = f'{document[FRENCH]}.pdf'
-            os.rename(os.path.join(TMP, f'{document[ENGLISH]}.pdf'),
-                os.path.join(TMP, pdf))
+            # rename the document
+            pdf = f'{document[language]}.pdf'
+            os.rename(os.path.join(tmp, f'{MAIN}.pdf'),
+                      os.path.join(tmp, pdf),
+                      )
+            # if signature is disabled
             if not sign:
-                os.rename(os.path.join(TMP, pdf), pdf)
+                # fetch the document from temporary directory
+                os.rename(os.path.join(tmp, pdf),
+                          os.path.join(directory, pdf),
+                          )
+            # if signature is enabled
             else:
+                # sign the document
                 run(['gpg',
-                    '--armor',
-                    '--detach-sign',
-                    os.path.join(TMP, pdf),
-                ])
+                     '--armor',
+                     '--detach-sign',
+                     os.path.join(tmp, pdf),
+                     ])
                 signature = f'{pdf}.asc'
+                # fetch the document and signature from temporary directory
                 for f in [pdf, signature]:
-                    os.rename(os.path.join(TMP, f), f)
+                    os.rename(os.path.join(tmp, f),
+                              os.path.join(directory, f),
+                              )
+                # verify the document signature
                 lines = errun(['gpg',
-                    '--verify', signature, pdf,
-                ]).decode('u8').splitlines()
+                               '--verify', signature, pdf,
+                               ]).decode('u8').splitlines()
                 id = lines[2].index('"')
                 lines = [
                     lines[0],
@@ -63,23 +96,22 @@ def build(sign):
                     .replace('@', ' @ ')
                     .replace('.', ' ⋅ ')
                 ] + lines[5:]
+                # write verification file
                 buffer = os.linesep.join(lines).encode('u8')
-                with open(f'{pdf}.vrf', 'bw') as f:
+                with open(os.path.join(directory, f'{pdf}.vrf'), 'bw') as f:
                     f.write(buffer)
+    # clean
+    wipe(tmp)
 
 
-def clean():
-    shutil.rmtree(TMP, ignore_errors=True)
+def wipe(directory):
+    shutil.rmtree(directory, ignore_errors=True)
 
 
 def main():
     file = os.path.realpath(__file__)
     directory = os.path.dirname(file)
-    os.chdir(directory)
-    clean()
-    os.makedirs(TMP)
-    build(len(sys.argv) == 1)
-    clean()
+    build(directory, len(sys.argv) == 1)
 
 
 if __name__ == '__main__':
diff --git a/cnam/travaux/mémoire/presentation/main.tex b/cnam/travaux/mémoire/presentation/main.tex
new file mode 100644
index 0000000..eaacd90
--- /dev/null
+++ b/cnam/travaux/mémoire/presentation/main.tex
@@ -0,0 +1,7 @@
+\input{settings}
+
+\begin{document}
+
+…
+
+\end{document}
diff --git a/cnam/travaux/mémoire/presentation/settings.tex b/cnam/travaux/mémoire/presentation/settings.tex
new file mode 100644
index 0000000..cb1a5cf
--- /dev/null
+++ b/cnam/travaux/mémoire/presentation/settings.tex
@@ -0,0 +1 @@
+\documentclass[12pt]{extarticle}
diff --git a/cnam/travaux/mémoire/thesis.tex b/cnam/travaux/mémoire/thesis.tex
deleted file mode 100644
index 69075b7..0000000
--- a/cnam/travaux/mémoire/thesis.tex
+++ /dev/null
@@ -1,9 +0,0 @@
-\newcommand{\import}[1]{\input{thesis/#1}}
-
-\import{settings}
-
-\begin{document}
-
-…
-
-\end{document}
diff --git a/cnam/travaux/mémoire/thesis/main.tex b/cnam/travaux/mémoire/thesis/main.tex
new file mode 100644
index 0000000..eaacd90
--- /dev/null
+++ b/cnam/travaux/mémoire/thesis/main.tex
@@ -0,0 +1,7 @@
+\input{settings}
+
+\begin{document}
+
+…
+
+\end{document}