<｜begin▁of▁sentence｜>### Instruction:
Certainly, imagine you are designing a technical illustration for a manual that details various network configurations. Your current task involves depicting a simplistic network topology consisting of two interconnected systems, 'A' and 'B'. To accurately represent this network, you are looking to produce a GML file, which provides a structural outline of the nodes and their connectivity.

Could you provide me with a GML diagram that showcases the connection between systems 'A' and 'B' using NetworkX's `generate_gml` function? This diagram would be essential for the documentation you are preparing, as it would visually communicate the topology of this fundamental network structure. Please ensure the output is compatible with the GML file format, which I’ll need to include in the technical documentation as "simple_network.gml".
### Response:
import networkx as nx

# Create a simple graph
G = nx.Graph()
G.add_node('A')
G.add_edge('A', 'B')

# Use the generate_gml function to generate GML lines
for line in nx.generate_gml(G):
  print(line)
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