~~Drawing dotted ~~Dotted and dashed lines ~~into ~~in directed ~~graphs with SAGE~~graphs

Hi,

I would like to ~~know, ~~know if it is possible to do (one of) the following with ~~SAGE.~~Sage.

Reading

http://doc.sagemath.org/html/en/reference/plotting/sage/graphs/graph_plot.html

I saw that it is possible to draw dashed and dotted lines. ~~No ~~Now my questions are

1) Is it possible to produce an output graphic where some edges are dotted and some edges are dashed?

2) Is it possible to force the text in the labels of the vertices, e.g. M2, M4, M1 instead of 0,1,2?

Thanks for the ~~help! ~~help!