You may wish to store your PL/SQL code in files with file extensions other than our defaults.
We ship with .klr, .pkb, .pkh, .pks, .plb, .pls as associated file types for our PL/SQL editor and for opening said files on your machine with SQL Developer.
But maybe at XYZ Incorporated, you keep your package bodies in files of type .bdy
Are you stuck using our SQL Worksheet for doing serious PL/SQL work?
Just setup your preferences.
Defining YOUR PL/SQL File Types
Open the prefernces, go to File Types, and add a new one. Set your extension, and be sure to use the drop down control below to set the FIle Type to ‘PL/SQL.
This tells SQL Dev to put your file into a PL/SQL editor with all the fancy PL/SQL IDE features available.