A "new entry" is a title which is making its début in that chart. This is applied to all charts, for instance a track which is outside the Top 40 but which later climbs into that level of the chart is considered to be a 'new entry' to the Top 40 that week. In most official charts, tracks have to have been on sale for a period of time in order to enter the charts; however, in some retailers' charts, new releases are included in charts as 'new entries' without a sales history in order to make them more visible to purchasers. A real "new entry" is a title that makes its chart début, no matter how many positions officially the chart actually is. In the UK the official published chart is a Top 100 although a new entry can take place between positions 101-200 (this is also true of the Billboard Hot 100, which has a "bubbling under" addendum for new songs that have not yet made the Hot 100). The Top 40 is only used for radio to shorten the play-lists.