Welcome , Registration , and other StartingPoints ; TWiki history & Wiki style; All the docs.. ... The plain skin is used to get the rendered topic text without any page decoration such as side, top or bottom bars. For example, TWiki uses this skin for pop-up help windows. ... This skin has been used to show topics in a pop-up window; this has been replaced with template viewplain . ... Note: The Description, Screenshot and Base Name rows are needed by the TWikiSkinBrowser . ...