I include this code in all head elements at the least.
Here is a copmrehensive list of everry meta tag able to be utilized with html. Referencing: https://gist.github.com/whitingx/3840905
This is the code that was created to be able to copy these code snippets. Note that several parts needed customizing for each particular situation.
Copy this code from the source code then paste it into a text file. Save As a Name, something relevant to the snippet of code. Also, save where other text files for snippets are kept. Referencing the image below, make changes accrodingly. NOTE: There are 3 places that 'copybutton' appear. These need changed from all previous 'copybutton' variations. For example: 'copybuttona', 'copybuttonb' or ''copybuttonc'. Do, a, b, c, d... and so on.
I've tried this with Javascript get called in the htnl on it's page and it works as far as displaying the code, but the copied code message doesn't get displayed or the code copied