[sebazzz]

That's nice but you can't run the Web server in the background can you? So you need to terminate it to edit index.htm?

[shrubble]

Could you use DesQView or similar to multi-task it?

[pan69]

That's what I did back in the day, FrontDoor + RemoteAccess under DesQView.

[bluedino]

Microsoft Windows will let you multitask DOS applications

[enormousness]

They use a VM so I assume you'd simply edit offline then redeploy the machine.

[slim]

you would need to make it a TSR