# htmlhelp assets `build.properties` contains properties that inform folder/file locations, and DocBook properties that configureformatting or transformation behavior. `htmlhelp.xsl` is an XSLT stylesheet used in HTML generation that will be compiled into a CHM file with Microsoft's HTMLHelp Workshop. It also provides an opportunity to customize any of the styles provided by the master Perforce `htmlhelp.xsl` stylesheet, or to completely override it. The `images` folder should contain any images referenced within the guide. Ideally, images can be in any web readable formats, such as PNG, JPEG, GIF, etc.