Microsoft Edge: How to Open a Page Offline?

This is an extremely basic question, but I haven't found an answer yet.

I recently purchased a brand-new computer with Windows 10 and at the moment am using the Microsoft Edge browser that came with it.

I would like to open some offline (HTML) pages, but the Control-O feature to which I am accustomed in IE, Chrome, and Firefox, doesn't work. In the Edge browser, the hotkey Control-O resets the zoom level.

Is there a replacement hotkey for Control-O in Microsoft Edge?
Alternately, what is the non-hotkey method for opening an offline page in Edge?

Note, I am not trying to set the default Start page. I would simply like a quick and easy way to navigate to and open an HTML page that is saved on the hard drive.

Copy Function Error

I am updating a C++ program, part of which copies arrays of doubles by iterating through each array (copies elements of array wa2 into array X):

for (j = 0; j < N; ++j) {
        X[j] = wa2[j];
} // End for j

I would like to use the built-in function copy, so am going through the program replacing all loops with copy:

copy(wa2, wa2 + N, X);

However, this causes my compiler to complain:

error C4996: 'std::_Copy_impl': Function call with parameters that may be unsafe - this call relies on the caller to check that the passed values are correct. To disable this warning, use - D_SCL_SECURE_NO_WARNINGS. See documentation on how to use Visual C++ 'Checked Iterators'

I have gone through this program and am sure the limits of the copy are fine. But I don't know how to turn off this check so that compilation can complete and this program can be executed. I have never tinkered with compiler options before. Any suggestions? (I am using Microsoft Visual Studio Express 2013 for Windows Desktop.)