TurboCAD Designer V17 Features - Layer Filters - Layer filters that are. dwg compatible, help you manage large, complex drawings with ease. Simply organize layers by a defined set of parameters Color Table (CTB) Print Style Support - AutoCAD Color Table (.CTB) file support added to existing support of Style Table (STD) print styles Blocks and Groups - In-place editing of blocks and groups. Now can edit and customize individual Blocks Index Color Support - Index Colors added to support of True Colors. Includes proper round-tripping of DWG files and the Color Dialog's Index colors match AutoCAD LT colors 1 - 1