| HAML | ERB | comment |
| % | tag/tagname | just replace % to <> if there's no %, it assumes div |
| # | id | pound sign |
| . | class | period |
| - | <% | Running Ruby/Ruby code |
| = | <%= | Inserting Ruby/Ruby expression |
| %section#dashboard | <section id="dashboard"> | |
| %section.grouped#upgrade | <section class="grouped" id="upgrade"> |
%td#whatif.itworks.fine hm?
<td class='itworks fine' id='whatif'>hm?</td>