display two or more logcat filters at the same time in Android Studio

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I have declared two LOG.i such as followings in my code:

Log.i("pen", pen.toString);Log.i("book", book.toString);

Then I added these two filters to my Logcat window (via Edit Filter Configuration):

Filter1 with 'LOG TAG' set to "pen" 

Filter2 with 'LOG TAG' set to "book"

I have no problem to see them each individually (by selecting them each in drop-down filter in logcat window).

Now What I need to know is How to display both filters at the same time?

answers:

just enter or paste something similar (pen|book) to the Search box on the main logcat window 

and do not forget to tick Regex box next to it.

From:https://stackoverflow.com/questions/33366558/how-to-display-two-or-more-logcat-filters-at-the-same-time-in-android-studio