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}</lang>
Note: Icon and Unicon accept both / and \ for directory separators.
=={{header|IDL}}==
<lang idl>
print, FILE_TEST('input.txt')
print, FILE_TEST(PATH_SEP()+'input.txt')
print, FILE_TEST('docs', /DIRECTORY)
print, FILE_TEST(PATH_SEP()+'docs', /DIRECTORY)
</lang>
=={{header|J}}==
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