As the name suggests, this tab will allow you to change the settings related to the symbols and arrows of the dimension. From the Arrowheads panel, select the type of arrow you want in your dimension style using the First drop-down menu. When you change the First arrow, the Second one will change automatically to match the First one but if you want a different Second arrow, then you can change the Second arrow from the Second dropdown. The Leader drop-down menu will allow you to change the type of arrow for the leader line, which we discuss later in this chapter. You can change the size of the Arrow from the next field, Arrow size:

The next panel is Center marks. You can select None if you don't want a center mark at the center of a circle or an arc in the drawing. Select Mark if you want a tiny center mark and the Line option if you want to add an extra line along with the center mark. The field next to the Mark option can be used to specify the length of the center mark lines.