[Zope] (tal, metal) macro template id

Hi all, Inside the template where macros are defined, I need to get its id, i.e: <span metal:define-macro="kk"> Showing: <b tal:content="template/getId"> conextual! </b> contents, rendered inside page <b tal:content="thisMACROpage/getId"> fixed / ??? </b> </span> Any hint? Thanks in advance, Pablo