Hi!
When you export a body as STL in ASCII format and open the file in a text editor, a body is defined by a start line "solid ASCII" and ends with "endsolid".
In OpenFOAM, a widespread opensource CFD software package, the string after "solid" and "endsolid" is read as the name of that solid. Hence, every body exported by fusion360 is named ASCII by default. It would be much cleaner and probably also useful in other programs if in the exported stl file the name of the body (as named in fusion360) would be written out after "solid" and "endsolid", e.g. "solid wing" and "endsolid wing".
Cheers stefan