[drv]

The actual QuickBASIC compiler allowed any case for keywords.

The lack of line numbers was a bit confusing too - my first inclination when seeing a BASIC prompt is to type

  10 PRINT "hello"
  20 GOTO 10

Aside from that, it seems to work as expected (at least in the quick tests I tried).

[sratner]

Numeric labels also don't work:

  10: PRINT "hello"
  GOTO 10

This works though:

  label: PRINT "hello"
  GOTO label