Bugs in content types

I need to add two buttons to the editor for the advanced text editor.  One for subscript and one for superscript.  Can someone point me in the right direction.  

I've spent several hours chasing this rabbit so forgive me if I seem so. :) 

Hi

I'm unable to download content I create on the H5P site. I can't find the Download button anymore. When will it be back?

Thanks

Amul

Hi,

I've created a proof of concept Course Presentation that I'd like to integrate into Moodle. However, the download button doesn't show in my presentation. The presentation is at https://h5p.org/node/45317

Is this supposed to be like that or is it a bug?

Thanks
serettig