Hello fellow SimCity 4 players!
 
Here's the online version of the NAM Documentation. This documentation is included in the NAM 31.2 too, but if you don't have access to the documentation for any reason, you can check out the manuals here.
 
The following NAM manuals are available in PDF format: NAM Users Manual
The basic manual of the Network Addon Mod, explaining the basics of this complex mod. NAM Alternate Components Guide
Are all the options about overrides and alternatives in the NAM installer dazzling for you? This guide gives you a preview of all alternative textures and overrides. NAM Transit Stations Manual
Everything about the included transit stations in the Network Addon Mod. NWM Users Manual
The manual of the Network Widening Mod plugin. RHW Users Manual
The manual of the Real Highway Mod plugin. Project Symphony Users Manual
The manual of the Maxis Highway Override / Project Symphony plugin. (Last updated: 2013-08-15, NAM 31.2)

NOTE: The NAM 32 PR1 is NOT documented yet.

Best,
Maarten