[dehrmann]

> variations on Helvetica have been pre-installed on most modern personal computers by default

Windows doesn't have one.

[monocasa]

Arial is essentially a Helvetica variation. At it's most charitable, Arial is to Helvetica as RC Cola is to Coke, with Monotype owning Arial and Linotype owning Helvetica.

[dehrmann]

You're not wrong, but there are vocal designers that wouldn't be happy with that comparison.

[hatmatrix]

Arial