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.
Gas-fired water heaters require a mechanical permit and electrical water heaters need a plumbing permit to ensure that the unit is installed properly with a temperature and pressure relief valve, the valve has an attached drainpipe, and the entire system is installed in a safe location.
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.