picture effects
A picture style is a combination of formating effects applied to a picture.
if it's a new PowerPoint version, it has a file name of .pptx, but in general, it's called a PowerPoint.
There are styles built into Excel. These define things like the font size, colour, number formatting, alignment and other things, all combined together. The standard style that is used is called Normal. You can change it and even create your own combination of formatting to be a style. That is a custom style.
It is general formatting, with two decimal places.
fill without formatting
powerpoint buttons
This is called "Disk Formatting" "Formatting"
It was called "presenter"
point
they are called designs
Nonprintable characters
A template.