In delphi/objectpascal - difference between "procedure somemethod()" and "class procedure somemethod()"

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Delphi

I am having difficulties understanding the difference between the following (similar) procedure definitions. Also I'm wondering how to determine when and why to use the 2nd definition.

#1 - Standard routine definition

type
  TFigure = class
  public
     function Supports(Operation: string): Boolean; virtual;
     procedure GetInfo(var Info: TFigureInfo); virtual;
     ...
  end;

#2 - routine prefaced by the keyword "class"

type
  TFigure = class
  public
     class function Supports(Operation: string): Boolean; virtual;
     class procedure GetInfo(var Info: TFigureInfo); virtual;
     ...
  end;

What I have tried:

I've googled this topic and cannot find a simple, direct definition of when/why to use the "class" keyword.

The 2 examples in my question were taken from the Embarcadero website - I just removed the "class" for example #1. I did not see any documentation re: the specific differences or when/why to preface with the keyword "class".

This has been bugging me for quite a while now and any clarification is greatly appreciated.

b.