It was sort of a surprise that computers do -y when I first learned basic, but it really wasn’t an issue. Maybe advanced graphics, e.g. rotation matrix, will b

It was sort of a surprise that computers do -y when I first learned basic, but it really wasn’t an issue. Maybe advanced graphics, e.g. rotation matrix, will be more confusing later, but at this point you’re not a beginner and can always incorporate a mirroring matrix into your stack. Note also that almost all editors and guis also use top=0 (except AppKit, where it is configurable non-default).