To achieve this, please do the following:
1. Replace 'open' with 'winopen', since the function 'open' does not work in standalone mode:
>> winopen('USER_MANUAL.pdf')
This command will work in the compiled app as long as the PDF file is present in the installation folder.
2. Add the PDF into the application. To do this, you need to manually add it into the field 'Files installed for your end user' within the Application Compiler. This will add your PDF file such that it is automatically installed with the App.
3. Finally, you also need to add the file into 'Files required for your end user', if MATLAB does not automatically do that for you.
