diff --git a/1-Introduction.odp b/1-Introduction.odp
index 31db371..1836887 100644
Binary files a/1-Introduction.odp and b/1-Introduction.odp differ
diff --git a/1-Introduction.odt b/1-Introduction.odt
new file mode 100644
index 0000000..e78e832
Binary files /dev/null and b/1-Introduction.odt differ
diff --git a/2-PORT-BIEL-WACS.odp b/2-PORT-BIEL-WACS.odp
index 0fd60b8..9aff699 100644
Binary files a/2-PORT-BIEL-WACS.odp and b/2-PORT-BIEL-WACS.odp differ
diff --git a/2-PORT-BIEL-WACS.odt b/2-PORT-BIEL-WACS.odt
new file mode 100644
index 0000000..b58c1d6
Binary files /dev/null and b/2-PORT-BIEL-WACS.odt differ
diff --git a/3-BTT-Writer.odt b/3-BTT-Writer.odt
new file mode 100644
index 0000000..a3a69bb
Binary files /dev/null and b/3-BTT-Writer.odt differ