It's really enjoyable to look at the source. These days one I feel it's quite rare to see assembly code not as an output from a tool like IDA Pro.
If I remember correctly, the size of a compiled GWBASIC.EXE file was about 80 kB.
What feels weird though is seeing all the files on GitHub last modified "38 years ago," which by the way, also includes the file CODE_OF_CONDUCT.md.