It will pad the text with spaces where necessary. Now a paragraph with some underlining. It is very important when discussing .ul complex matters, that the most .ul important words should be clearly indicated, possibly by .ul underlining. However there are many people who object to .ul excessive underlining, and an alternative is to write so clearly that underlining is not necessary. You can buy snacks and drinks there much of the time.
Crumbs tend to drop between the keys and stop the terminals working.
Moreover bits of food tend to leave the tables in a messy state and the university cannot afford to hire people to come and clean up after you. If you don't log out, someone else can come and use the terminal and mess up your files while you are away. Back to single spacing from here. It's effect continues until the next .fi command, as here. If a line of text starts with one or more leading spaces then it will not be joined to the next line this can sometimes produce a desired effect, though when done by accident it can be very confusing.