diff --git a/README.markdown b/README.markdown
index fe6f40f..d7163ba 100644
--- a/README.markdown
+++ b/README.markdown
@@ -10,6 +10,11 @@ utilizing XML transformations.
 
 And supporting to manage the `data.xml`.
 
+## Cover
+
+* extract: `pdftk pdfs/${if}.pdf cat 1 output covers/${of}.pdf`
+* convert: `convert covers/${of}.pdf covers/${of}.jpg`
+
 ## using
 
 Simply call `./gen.sh build` for generating the target files.
@@ -39,3 +44,7 @@ number, here 99.
 <img src="ss/ss-download.png"  width="220">
 
 <img src="ss/ss-feed.png"  width="220">
+
+## reverse timestamp for specific date time
+
+`date --date="Wed, 10 Nov 2021 08:33 +0000" +"%s"`
diff --git a/data.xml b/data.xml
index a406148..7509648 100644
--- a/data.xml
+++ b/data.xml
@@ -20,15 +20,22 @@
 ]>
 
 <schleudern>
-<!--schleuder id="102">
+<!--schleuder id="103">
 	<date></date>
-	<image>covers/ds102.jpg</image>
+	<image>covers/ds103.jpg</image>
 	<link filesize=""></link>
 	<link filesize=""></link>
 	<preface></preface>
 	<teaser></teaser>
 	<info date=""></info>
 </schleuder-->
+<schleuder id="102">
+	<date>Wed, 10 Nov 2021 08:28 +0000</date>
+	<image>covers/ds102.jpg</image>
+	<link filesize="104220">pdfs/ds102.pdf</link>
+	<link filesize="103582">epubs/ds102.epub</link>
+	<teaser>Nun ist die #102 auch online, wie gewohnt als PDF und mit überarbeitetem ePUB.</teaser>
+</schleuder>
 <schleuder id="101">
 	<date>Fri, 12 Jun 2020 05:52 +0000</date>
 	<image>covers/ds101.jpg</image>