A family of sans-serif fonts complementing Lucida Serif. Courier is a monospaced slab serif typeface. Times New Roman is a serif typeface. The typeface used is Rotis Semi Serif. The symbols are by convention usually written in roman sans serif typeface. Times New Roman and Garamond are common examples of serif typefaces. Great variety exists among both serif and sans serif typefaces. Sans-serif fonts tend to have less stroke width variation than serif fonts. Typefaces can be divided into two main categories&colon; serif and sans serif. Vera consists of serif, sans-serif, and monospace fonts. The original Lucida font designed in 1985, featuring a thickened serif. It has been described as one of the ten most used serif typefaces. Below are some images of serif letterforms across history. Other studies have found no significant difference in readability for serif or sans serif.