These were inspired by the ISO working draft for object-oriented extensions, but many of the differences from Turbo Pascal's dialect (such as the draft's requirement that all methods be virtual) were ignored.
这些是ISO面向对象扩展工作草案所鼓励的，但是许多与Turbo Pascal方言的差异（例如草案要求所有的方法是虚拟的）被忽略了。