I am using netgraph to visualize my networkx graphs. My problem now is, the visualisation of formulas are in natural way not as pretty as I would expect. Here my example graph:

```
import networkx as nx
from netgraph import Graph # pip install netgraph
import matplotlib.pyplot as plt

node_labels = {1: 'p→q', 2: '¬q', 3: '¬ (¬p)', 4: '¬p', 5: '¬p∧ ¬ (¬p)', 6: 'p', 7: 'q', 8: 'q∧ ¬q', 9: '¬p'}
color_map = {1: 'red', 2: 'red', 3: 'red', 4: 'red', 5: 'lightblue', 6: 'lightblue', 7: 'lightblue', 8: 'lightblue', 9: 'blue'}
edge_labels = {(3, 5): '∧I', (4, 5): '∧I', (4, 6): '¬E', (5, 6): '¬E', (1, 7): '→E', (6, 7): '→E', (2, 8): '∧I', (7, 8): '∧I', (8, 9): '¬E', (3, 9): '¬E'}

graph = nx.from_edgelist(edge_labels, nx.DiGraph())

Graph(graph, node_labels=node_labels, edge_labels=edge_labels,
      node_color=color_map, node_edge_color=color_map, arrows=True)

plt.show()

```

Output (direct / after zoom in):

[![enter image description here](https://i.stack.imgur.com/wTaue.png)](https://i.stack.imgur.com/wTaue.png) [![enter image description here](https://i.stack.imgur.com/N2GCv.png)](https://i.stack.imgur.com/N2GCv.png):

My questions now:

* Is their a way to adjust the font size of the nodes?
* Is it possible to rotate the edge labels in that way they are aligned horizontally?