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Posner concluded that " We surmise that what Ty is seeking in this case is an extension of antidilution law to forbid commercial uses that accelerate the transition from trademarks ( brand names ) to generic names ( product names ) . With Perl , we have limitless choices about how to implement a session system , but there are some standard modules you can use that make the process significantly easier . School zones , rail grade crossings , parks , playgrounds , and other uses that have the potential to generate pedestrian activity may receive special attention .