The cue sheets are in HTML format because that is the standard format for the web.
Programs such as Microsoft Word can also be used to edit HTML files -- if you select 'Save As HTML'.
If you create your own cue sheets, I suggest that you save them in RTF (Rich Text Format). Rich Text Files display faster within CSDS, and eventually, our web-based cue sheets will also be available in RTF.
The 'Download Cue Sheets for CSDS' option within the Record Database on our web site has all the cue sheets in a single file, so that CSDS can easily extract those that are needed.