tsort.1: use mandoc literal block for example
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tsort.1
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tsort.1
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@ -31,6 +31,7 @@ The graph as successfully sorted, but contained loops.
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An error occurred.
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An error occurred.
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.El
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.El
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.Sh EXAMPLES
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.Sh EXAMPLES
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.Bd -literal -offset left
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The input
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The input
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a a
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a a
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@ -63,7 +64,7 @@ represents the graph
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┏━━━┓ ┏━━━┓
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┏━━━┓ ┏━━━┓
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┃ e ┃───→┃ f ┃
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┃ e ┃───→┃ f ┃
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┗━━━┛ ┗━━━┛
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┗━━━┛ ┗━━━┛
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.Ed
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.Sh STANDARDS
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.Sh STANDARDS
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The
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The
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.Nm
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.Nm
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