Third, I don't think this is an example of a series continuity error in the way it's asserted to be. It wouldn't make any difference whether this was before or after "Revelation of the Daleks", because the Daleks don't have a time corridor in that story, or in any other story Peri appears in. The only way Peri could have known that Daleks have time corridors is if the Doctor had been telling her about his old adventures, and there's no reason he couldn't have done that at any time.
So, I have several things to say about this third bullet point, and they wouldn't all have fitted in the edit reason box.
First, this is a violation of the rule to avoid Conversation in the Main Page, and the rule to avoid third-level indentation.
Second, if the episode contains an example of a Series Continuity Error, it should be listed clearly under the heading of Series Continuity Error, not hidden in the example of Continuity Nod where nobody will think to look for it.
Third, I don't think this is an example of a series continuity error in the way it's asserted to be. It wouldn't make any difference whether this was before or after "Revelation of the Daleks", because the Daleks don't have a time corridor in that story, or in any other story Peri appears in. The only way Peri could have known that Daleks have time corridors is if the Doctor had been telling her about his old adventures, and there's no reason he couldn't have done that at any time.