We underline or italicize novels to set them apart from the surrounding text. This is especially important in printed works. If you are writing a bibliography, for example, italicizing the novel titles makes it clear which are the works being cited. Also, in a manuscript, it gives a visual cue to the reader that a particular name is that of a novel. It's a way of showing respect to the work and making it distinct within the body of writing.
It depends. Usually, italicizing is more common for titles of short stories. But in some cases, underlining can also be used, especially in handwritten work.
Most of the time, short stories are italicized. It's a standard practice that helps distinguish the title from the main text. But there can be exceptions based on the requirements of a particular publication or writing guideline.
Most of the time, short story titles are italicized. This helps to distinguish them from the main body of the text and gives them emphasis. However, in some cases, depending on the specific style guide or context, they might be placed within quotation marks instead.
It depends on your personal preference and the purpose. If you want to highlight certain parts for quick reference or to make them stand out for some reason, underlining can be useful.
It depends. In many formatting styles, you can italicize novels for emphasis or to distinguish them from other text. But it might have specific rules depending on the publication or platform you're using.