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3. In the Drawing tab, under Atom Indicators and Bond Indicators, select Show Stereochemistry. The stereo-centers are marked as shown in the following example. Formatting Indicators The atom label settings determine the font style and size of the terms. A setting on the Building/Display tab of the Preferences dialog box determines whether or not the term will be displayed in parentheses. (The default is to display parentheses.) Removing Indicators To remove an indicator, click it using the Eraser tool. Positioning Indicators Stereochemistry indicators are positioned automatically and move appropriately if a structure is modified. However, you can move them either by dragging them or by indicating an exact location. To indicate an exact location: 1. Select the indicator to move. 2. Right-click and choose Position. The Position Indicator dialog box appears. 3. Click the appropriate option, and type a value, described below: Figure 8.2 Stereochemistry indicators If you make changes to the drawing that affect the stereochemistry, the stereochemistry is recalculated. Hiding Indicators 1. Select the indicator to hide. 2. Right-click and choose Hide Indicator. To Position … Type a value for the position by… from the atom or bond center to indicator center angle, in degrees or clock, in clock time from the atom or bond offset, horizontal center to bottom left of and vertical indicator baseline at specified coordinates absolute, horizontal and vertical Chem & Bio Draw 12.0 User Guide 87