No, you can copy and paste codes from another ccf, codes posted in the discrete codes section of the files area, or even a forum post.
You need to have developer mode enabled. The easiest way to do this is to use Daniels Pronto.ini Workshop, available here:
[Link: remotecentral.com]. Start the program, select your remote and software. The rest is self-explanatory. Go ahead and enable the additional fonts as well.
To actually paste a code a code must already be present. If there isn't one, choose set IR and then advanced and then select any RC code. Click OK then double click the code on the action list. Choose view IR, highlight the old code and paste the one you want over the top.
Jim L