gctl/tool/dsviewer/dsviewer.md

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#### quit
Does what it says.
#### info
Show the table information.
#### open \<file\> [hashead|nohead] [\<delimeter\>] [\<tag-sym\>] [\<att-sym\>]
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Open a dsv/csv file. The default setups are 'nohead', space for delimeter, '#' for annotations, and '!' for tags.
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#### save \<file\>
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Save table to a dsv/csv file
#### stats \<column\> \<column\>...
Show statistics of a data column or columns.