I am hatching Dana Bell's original echobase software this evening, contained in
echobase.zip in the coordutl file echo.
This software was originally written C, Dana lost the source in a hard drive crash IIRC. This archive also contains C structs and .h header files.
As soon as I update the web page, it will be available at:
--- BBBS/Li6 v4.10 Toy-4
* Origin: Prism bbs (1:261/38)