FOR I=1 TO 10 PRINT "Hello, world" NEXTcould be written as:
FOR I=1 TO 10: PRINT "Hello, world" : NEXTSuch a feature used to be a nice feature back in those old days in interpretive BASIC -- it allowed you to avoid having to use GOTOs to skip around blocks of code (which would incur a slight performance penalty because of the line number search). Also "packing" command line with as much code as possible gained a slight performance gain as interpreter would simply follow "code stream" -- there was often a very slight performance hit when interpreter would have to follow across program lines. Personally I don't feel such a feature would be as useful today. I remember one particular program I'd written that I'd written in BASIC that I could merge into an existing program to "pretty print" it by splitting multi-statement lines and add indentation (one often avoided adding whitespace in interpretive BASIC -- it would make your program run slower).