# .pm file of perl in the controller directory to gather up the content into a data structure (generally a hash or array)
# .pm file of perl in the controller directory to gather up the content into a data structure (generally a hash or array)
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# .lex or .pm in the I18n/modules directory consisting of translation strings
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# .lex or .pm in the I18n/modules directory consisting of translation strings. I think that the system will generate the .pm file from the .lex file, but will use a .pm file if it is there (need to check this with @michel).
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# .html.ep file in the themes/default/templates/layout
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# .html.ep file in the themes/default/templates/layout directory being the top level panel plus includes to subsidiary panels.
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# In addition there may be "extra" .html.ep files in the themes/default/templates/layout/partials directory, which are conditionally included in the top level panel code.