[Lowerbounds, Upperbounds]

There are actually three kinds of dashes in LaTeX, each serving a different purpose. Let’s use them well.

• The intra-word one is simply a single dash. Example:
  

  I like ice-cream.

• We should use two dashes to indicate number range. The most common place this comes up is in the bib file. Note that there should be no space surrounding it. Example:
  

  pages = {293--299}

• The last one is the actual dash punctuation where there are three dashes in a row and again there should be no space surrounding it. Example:
  

  Sometimes it's difficult---or even downright impossible---to come up with a short example sentence.