Silk Performer 19.5 provides a preview of the brand-new Workbench editor, which offers everything you would expect from a state-of-the-art editor, like line numbering, code folding, advanced syntax highlighting, zooming, or code completion.
The new editor will be fully supported in an upcoming release, but you can already preview and test it. To activate the new editor, open a file browser, navigate to the Silk Performer installation directory, open the file performer.xml in a text editor (in elevated mode) and set the parameter EnableAdvancedEditor to true. Then start the Workbench and open a script. Note that this is a beta version of the new editor - it is not yet fully localized and might evoke unexpected behaviour. In such a case, return to the old editor. Also, various features are not yet supported, like the wizards for adding transactions and functions.