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float angle=0. | longitude of floating label in 3-D
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bool boxit=y [y/n] | if y, create a box around text
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int font=VP_NO_CHANGE | text font
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int lab_color=VP_WHITE | label color
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int lab_fat=0 | label fatness
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string label= | text for label
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float length= | normalization for xt and yt
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float long=90. | latitude and longitude of viewpoint in 3-D
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bool pointer=y [y/n] | if y, create arrow pointer
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float pscale=1. | scale factor for width of pointer
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float scale0=1. | scale factor for x0 and y0
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float size=.25 | text height in inches
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float y0=0. | position of the pointer tip
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float y_oval=0. | size of the oval around pointer
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float yt=0. | relative position of text
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