Dotted line (Optional css element) - gives the border (e.g.) a dotted look
You can customise elements of your table or div to have a dotted-line effect within the classes in your css code in your stylesheet.
For example:
.help {
cursor: help;
color: #333;
border-bottom: 1px dotted #9c0;
font-style: normal;
font-family: Georgia, Constantia, "Times New Roman", Times, serif;
}
The above class the content in this div designated with the class help makes it appear with the "help" cursor (the arrow with the question mark), in a color (#333 is a medium gray), gives it a dotted border underneath it all and displays the font as any of a "family" of serif fonts, starting with Georgia.