EDL formats such as CMX, GVG, Sony, Final Cut Pro, and Avid are similar but can differ in small (but important) ways. Particular attention should be paid to reel naming convention. On the Avid, reel names can be up to 32 characters, but user should be aware that these EDLs don't adhere to online editing machine control specifications. These are used by systems that have modified the import/export code to handle file-based workflows as tape acquisition formats wane. On FCP, in CMX3600 format, only eight characters are allowed. Particular attention should be paid towards b-reels. If the EDL handles dissolves to the same reel, reel names should be limited to 7 characters since the 8th character may be replaced.