Screenshot of a chart drawn by <a href="https://en.wikipedia.org/wiki/Lotus_1-2-3" class="extiw" title="w:Lotus 1-2-3">Lotus 1-2-3</a> R2.2J for <a href="https://en.wikipedia.org/wiki/NEC_PC-9800_series" class="extiw" title="w:NEC PC-9800 series">NEC PC-9800 series</a>.
<a href="//commons.wikimedia.org/wiki/User:Darklanlan" title="User:Darklanlan">Darklanlan</a>
2013-03-10
<span class="int-own-work" lang="en">Own work</span>