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**slopBed** will increase the size of each feature in a feature file be a user-defined number of bases. While
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something like this could be done with an "**awk '{OFS="\t" print $1,$2-<slop>,$3+<slop>}'**",
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**slopBed** will restrict the resizing to the size of the chromosome (i.e. no start < 0 and no end >
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5.14.1 Usage and option summary
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slopBed [OPTIONS] -i <BED/GFF/VCF> -g <GENOME> [-b or (-l and -r)]
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=========================== ===============================================================================================================================================================================================================
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=========================== ===============================================================================================================================================================================================================
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**-b** Increase the BED/GFF/VCF entry by the same number base pairs in each direction. *Integer*.
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**-l** The number of base pairs to subtract from the start coordinate. *Integer*.
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**-r** The number of base pairs to add to the end coordinate. *Integer*.
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**-s** Define -l and -r based on strand. For example. if used, -l 500 for a negative-stranded feature, it will add 500 bp to the *end* coordinate.
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=========================== ===============================================================================================================================================================================================================
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5.14.2 Default behavior
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By default, **slopBed** will either add a fixed number of bases in each direction (**-b**) or an asymmetric
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number of bases in each direction (**-l** and **-r**).
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slopBed -i A.bed -g my.genome -b 5
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slopBed -i A.bed -g my.genome -l 2 -r 3
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However, if the requested number of bases exceeds the boundaries of the chromosome, **slopBed** will
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"clip" the feature accordingly.
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slopBed -i A.bed -g my.genome -b 5000
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5.14.3 Resizing features according to strand
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**slopBed** will optionally increase the size of a feature based on strand.
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slopBed -i A.bed -g my.genome -l 50 -r 80 -s
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docs/content/slopBed.rst
