meaning of .section ".bstext", "ax"

anil kumar <[email protected]> Wed, 14 Apr 2010 16:36:31 +0530
Newsgroups org.kernel.vger.linux-assembly
Message-ID <[email protected]>
Hello,
I am trying to understand assembly code written in arch/x86/boot/header.S code.
I am not able to grab meaning of following line:
 .section ".bstext", "ax"

Can you tell meaning of this line ?

Thanks,
Anil

PS: It would be great help if someone can point any link which explain
code mentioned in this file.
I am not able to locate any good link using google search engine.