C:circle rad 40px  "Source.fs" fit
arrow right 400% 
E:box rad 10px "Text" "Preprocessor" fit
arrow right 200%
G: circle rad 40px "upload.fs" fit
F:circle rad 40px  "STM32xx.svd" at 1.0 s of C
arrow 100% from F.e
D:box rad 10px  "XML" "Transforms" fit
arrow right 220% "registers" "and (bit)fields"
H:circle rad 40px "Constants" at 2.0 s of C
arrow from H.e \
then right until even with E \
then to E.s