[plt-scheme] Help with "error" command

Hi all,

I am new to Scheme and am trying to figure out how to use the "error" keyword.  whenever I type anything with error a la (error error) or (error "error"), I get the message "reference to undefined identifier: error".  I thought this was part of the standard distribution, but do I need another binary/library from somewhere?  I am using DrScheme version 203 with Standard language.  Any help would be greatly appreciated.  Thanks!

Sincerely,
Ray Auerbach
ray<remove this part>@kffl.com
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