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A group of braces that has both ends pinned to adjoining columns must use the Free command. The BRACES card for this group has the following format:
Braces FREE
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ftors
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fbndstr
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fbndweak
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tbndstr
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tbndweak
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Pinned-end braces must be returned to end connection default values. The BRACES card for this group has the following format:
Braces FIX
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ftors
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fbndstr
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fbndweak
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tbndstr
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tbndweak
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If Fix appears on the line following Braces then all end connections for the brace are fixed.