reascripts/ReaSpeech/resources/icons/fontello/css/fontello-codes.css

.icon-pencil:before { content: '\61'; } /* 'a' */
.icon-cog:before { content: '\62'; } /* 'b' */
.icon-play-circled:before { content: '\63'; } /* 'c' */
.icon-stop-circle:before { content: '\64'; } /* 'd' */