What Is a Slash?
A slash is a mark mainly used to indicate line breaks, fractions, ratios, paired terms, and dates. (Note that the use of slashes in fractions, ratios, paired terms, and dates is better suited to informal, rather than professional, writing.)
When discussing fewer than three lines of poetry in a paper, writers use slashes to show where one line ends and another begins. (Longer poetry excerpts are formatted in indented block text.)
To indicate line breaks in a poem, be sure to insert a space both before and after the slash. However, when using a slash in fractions, ratios, paired terms, or dates, do not insert any spaces before or after the slash mark.