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.
fill without formatting
It is general formatting, with two decimal places.
This is called "Disk Formatting" "Formatting"
powerpoint buttons
Nonprintable characters
formatting
Formatting.
A template.
point