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I'm just curious how many use libraries in your day to day development (I'm assuming a fair amount of you do). I'd like to know how and why you use them, especially if you are using multiple libraries in the same project. I'm running into this problem and I'm not sure its inherant in using libraries or if I'm just misusing them or not using them as intended. I have this project and every major component is in its own library. I have a config library. I have a notification library. I have a synchornization library. I have a file writing library. I have a TCP/IP communication library etc. However what I find is when I want work on one small component it ends up loading almost every library in the project. For example in my notification library, if I load any vi in that library it loads the whole notification library. There is a vi somewhere in the notification library that sends out a TCP/IP message. Because it uses a vi in the TCP/IP communication library to get a queue ref, now it loads the TCP/IP library. And also somewhere in the notification library it writes something to a file, so it loads the file library which happens so use a semaphore to control access to the file which loads the synchronization library, which somewhere has config file entry which determines the size of some queue which no requires loading the configuration library. And it goes on and on. So now to edit a single low-level vi I end up loading multiple libraries into LabVIEW. Anyone else run into this problem? How do you handle it? How do you determine what to put in libraries and what not to? This problem gets even worse, because I have 2 applications. One is an HMI app running on Windows and the other is an RT app. For communication I send objects over TCP/IP and have a command pattern that runs on the recieving end. When I do that however then I up loading half the HMI app into memory on the RT target, just because one of the messages references a library on the HMI. Now I have all this code loaded in RT that is intended for the HMI and will never run in the RT app. Did I explain my problem well enough? thoughts?