A simple viewer for 2D-DXF files.

Files are opened in the Explorer, thus read from the SD Card.

No editing possible in any way, can't save DXF files -> no permissions required.

Controlled by:

- 1-touch: move / select point

- 2-touch: zoom / rotate

- 3-touch: fit to screen

Supports these elements:

* POINT

* LINE

* ARC

* CIRCLE

* TEXT

* LWPOLYLINE

* SPLINE

* BLOCK

* ENDBLK

* INSERT

* DIMENSION

* SOLID

* ELLIPSE

* POLYLINE

* VERTEX

* SEQEND

* MTEXT