[00:05:23] <iz7resh7el>	 start
[00:05:31] <iz7resh7el>	 *7077
[19:02:34] <Helmoony>	 Hi, is there a property to say that a book is explaining an other book (old book, difficult book, ..) or should I just use - main subject - 
[19:03:26] <Helmoony>	 hello
[19:04:02] <pintoch>	 main subject seems appropriate
[19:07:27] <Helmoony>	 thank you, I though there was something much more specific
[19:07:51] <pintoch>	 maybe there is - I am not very familiar with this domain