Building a custom block with rich text editing

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Hello,

I have a client and i would to build a few blocks for him so that he can update his website without my assistance .

He has several pages that need updating . They're ultimately lists with 3-4 standard pieces of information .

One of them is a description.

I managed to get 3 standard text fields for my id's and title but i can't seem to integrate a rich text editor field in it.

I know my way around css and html but i'm just scratching the surface of php .

The way I see it is I can either integrate the rich text editor in my already built block or I can duplicate the standard content block and add these 3 custom fields to it ( which might actually be easier ) except i just can't figure out how to duplicate that block without bursting my concrete install .

So ... any thoughts !?