how to save and restore settings for RealTerm, on Windows 7

Can I save and re-load settings like serial rate, etc.?

Use an INI file as described in the Command Line Parameters section of the Manual:

For complicated settings, a file of parameters can be loaded using INIFILE, and settings generated and saved from the "INI File" button on the Misc tab. (V3.0.0.18+). When debugging problems, the View Params button will show what Realterm actually received on its commandline.

INIFile Dialog:

• Create an INI file with all current settings in it, and edit that to only keep the ones you want to set
• Save and Load INI files
• Execute / test whole infile with Execute button
• Execute single lines in editor by double clicking them, or selections with Selected button.
• See the actual last Command Line with View Params
• Go direct to the commandline help for parameters by double clicking a parameter in the All Parameters Help
• list all parameters actually recognised by the program. (may be more complete than this help list below)

Source Command Line Parameters