MHT can save images and style sheets from web pages locally as files (or as part of the database)
MHT cannot be edited within the Doc pane, but can be edited with MS Word or other editors, such as Blocknote and WizHtmlEditor
As shown, "Edit with MSWord" is being used on ItemID10534.MHT, with the content now editable in the Word program
After editing and saving in the external editor, the Doc pane will refresh to show the edited content
MHT, mhtml and EML are identical file formats, some browsers / devices do not read MHT and EML files however, so it is best to use the .mhtml extension
In Android, free app MhtViewer allows Chrome to view MHT files (but not EML). Once installed, you can erase it, as it seems to just add a file extension to Chrome