<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> solved, i think i found the right way: FooClass package packageDirectoryName . bye n. <div class="moz-cite-prefix">On 8/9/21 2:33 PM, Nicola Mingotti wrote: </div> <blockquote type="cite" cite="mid:0a0ed88e-b42d-08ee-c44f-955620a4e03f@gmail.com"> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> Hi again, Problem. I have made my own package, classes, methods. Ok, all is ready to start the real work. But I need to do some cleaning and put data files in a reasonably safe directory Example: some JSON data file needed by my methods. The ideal for me would be to put the data files in the same directory containing the FooBar.pck.st file, or a sub-directory of it. Now, it would be all easy if i could say ---- FooBar getMyPackageDirectory. ---- Up to now i found that ----------------- ou1 _ CodePackageList new. "# here I can find the loaded package list." Then I could iterate over CodePackage list in 'CodePackageList new packages' and check the first one containing class 'FooBar'. What I ask you is this. Can I go in the inverse way? Does a Class know who is its ClassCatergory ? Does a ClassCategory know who is its package ? bye Nicola </blockquote> </body> </html>