To present a slide show I downloaded the Chrome browser. to show the browser screen on the Chromecast receiver monitor/TV. For the slideshow I added the Chrome browser iSlide extension. I found that I could not use it directly to present a folder of photos on the laptop.
Installation of water heater requires a plumbing permit. I recently had a water heater installed and the contractor got a permit. When the inspector came, he asked why he was there. I replied that I was told a permit was required to replace a water heater, but he said he had never heard of such a thing.
Also, exterior repair work like the replacement of windows, doors, siding or a new roof needs a permit. Interior renovations, like knock-ing down a wall or altering or repairing the electrical or plumbing system, including the replacement of a hot water heater or gas appliance, also require a permit.