https://books.google.com/books?id=hfpwEAAAQBAJ&lpg=PA75&ots=...
> In Smalltalk there is no such thing as source files...
$ cat fact.st
Stdio stdout
nextPutAll: 100 factorial printString;
nextPut: Character lf.!
SmalltalkImage current snapshot: false andQuit: true!
$ bin/pharo --headless Pharo10-SNAPSHOT-64bit-502addc.image fact.st
93326215443944152681699238856266700490715968264381621468592963895217599993229915608941463976156518286253697920827223758251185210916864000000000000000000000000