新问题-帮忙看一下

这是之前有人po的网站
http://www.hollistech.com/Resources/ddkbuild/ddkbuild.htm#Introduction
设定VC++6.0的环境设定,现在大致上是没问题了 ,
但文章中
Advanced Topics- AKA enabling Browse.
#
# setup visualC++ source browsing
#
BROWSER_INFO=1
BROWSERFILE=$(TARGETNAME).bsc -n
The first line enables generation of .sbr files, the intermediate file generated for each .obj file to create a .bsc browse file.
The second line sets the name of the .bsc file to our project target name. We also sneak in the \'-n\' option to BscMake here so that Bscmake does NOT truncate .sbr files. This is just the opposite behavior from the default VisualStudio behavior, but unless you have a very slow processor and a very small hard drive I strongly suggest you follow what I\'m doing up above. You will be much happier.
Note: Starting with the Windows 2000 DDK the SOURCES macros for setting up browse file generation were normalized to be more like the other tool invocation macros. The following line:
BSCMAKE_FLAGS=$(BSCMAKE_FLAGS) -n
can be substituted for the BROWSERFILE= macro definition above.  By default your .bsc file will end up wherever you demanded that your target be placed, so unless you really want to have the .bsc file in one place and the .sys file in another, you can just drop the BROWSERFILE= macro from your sources file.
不太了解它设第一项与第二项的功能是什么, 还有就是产生*.bsc是有什么作用?
谢谢!