diff --git a/Makefile b/Makefile
index cbe5367..1144e77 100644
--- a/Makefile
+++ b/Makefile
@@ -2,3 +2,18 @@ github:
git add .
git commit -a -m "automatic commit"
git push origin master
+
+sense:
+ cat source/*.csv > temp/stage1-from-csv.csv
+ cat source/*.rem > temp/stage1.rem
+ # perl scripts/rem2csv.pl temp/stage1.rem > temp/stage1-from-rem.csv
+ cat temp/stage1*.csv | sort -u > temp/stage2.csv
+ sort -t\; -k3n -k2n -k1n temp/stage2.csv -o temp/stage3.csv
+ # perl scripts/csv2rem-ics.pl temp/stage3.csv > temp/events-ics.rem
+ # perl scripts/csv2rem-html.pl temp/stage3.csv > temp/events-html.rem
+ #
+ # outputs
+ # perl scripts/csv2ikiwiki.pl temp/stage3.csv > output/events-ikiwiki.csv
+ # remind -m -p36 temp/events-html.rem | perl ../rem2html/rem2html --nomini --title Events > output/events.html
+ # remind -s360 -irem2ics=1 temp/events-ics.rem 1 Jan 2014 | TZ=CEST HOSTNAME=foo perl ../rem2ics/rem2ics -do -norecur -usetag > output/events.ics
+ # perl scripts/csv2rem.pl temp/stage3.csv > output/events.rem
diff --git a/temp/stage1-from-csv.csv b/temp/stage1-from-csv.csv
new file mode 100644
index 0000000..4b7bb90
--- /dev/null
+++ b/temp/stage1-from-csv.csv
@@ -0,0 +1 @@
+10;6;2017;-;17;9;2017;dOCUMENTA;various;Kassel;Germany;
diff --git a/temp/stage1.rem b/temp/stage1.rem
new file mode 100644
index 0000000..0cf9841
--- /dev/null
+++ b/temp/stage1.rem
@@ -0,0 +1 @@
+REM 14 Feb Valentine's Day
diff --git a/temp/stage2.csv b/temp/stage2.csv
new file mode 100644
index 0000000..4b7bb90
--- /dev/null
+++ b/temp/stage2.csv
@@ -0,0 +1 @@
+10;6;2017;-;17;9;2017;dOCUMENTA;various;Kassel;Germany;