Jake: If there is the possibility that this is a bug, then send to ITT Visual Information Solutions Tech Support ('techsupport@ittvis.com') a copy of one of the '.pro' files with multiple routines, which is not able to perform code folding properly. I would not think that code folding should be governed by a very difficult parsing algorithm. I would think that the Java/Eclipse-based workbench would look at all the lines of the '.pro' file, it would find each line that starts with the distinct word "pro" or "PRO", and it would find each ensuing line that starts with the distinct word "end" or "END". If there are problems with how this logic is executing, then I would expect one of the following to be the probable source: 1) Maybe there is a blank space character before the "PRO" or "END" statement? I do not know that this is so, but it is possible that that might violate the Eclipse code-folding rules. 2) Perhaps there is an issue with how newlines/carriage-returns are formatted in the files that you have that are having problems with code folding? Thus, if your IDL Workbench is on Windows, but you are displaying a '.pro' file acquired from a Linux machine, perhaps that poses a problem of code folding? In this case, you might try re-indexing by pasting your code in MS Windows 'Notepad', seeing that it displays properly, then resaving it on Windows. (If your problem were with Windows code displaying in a Linux IDL Workbench, you might try running the Linux utility 'dos2unix' on the Windows-based source code.) 3) Perhaps there is just an error in the matchup of PRO statements to END statements. (A ".COMPILE" call should reveal such a problem, however.) James Jones ITT Technical Support