Combining Programs

[Kernelpanic]

I'm wondering how others do this....If you want to combine two or more programs together, how do you go about it?

For example if you have the IDE running but you want to copy a bunch of code from another program into it....do you use something like Notepad to have the other program open?   I don't know of any way to open the IDE twice so I thought I'd ask here what others might do.

It's very simple: click on the appropriate file with Explorer. So you can two, three . . . Open IDE. However, only the first IDE shows the special settings (colors).