These are text format, readable without need of specific software,
and without complex structure, it means for which it is easy to create a translation script,
from and to CSV format. There are used as import or export format, for example :
SVG, STL, TXT, DXF,... A few binary format are used, but either they are translated
by external applications or these are "image" format. GIF and PNG format
are processed internally in TkFab®. TKFAB is a rich CSV format, where certain lines
have dedicated functions : units, signal names ...