Annotation definitions

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In addition to the definitions for regions [above], the following are always treated as annotations:

Line; coordinates define the end points of the line:

line[[x1, y1], [x2, y2]]
Vector; coordinates define end points; second coordinate pair is location of tip of arrow:

vector[[x1, y1], [x2, y2]]
Text; coordinates define leftmost point of text string:

text[[x, y], ’my text’]
Symbol; coordinates define location of symbol (see Sec. D.7.1 for a list of allowed symbols):

symbol[[x, y], {symbol}]

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