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- library(aggregate)
 - library(apply)
 - library(assoc)
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 - library(ugraphs)
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 - library(www_browser)
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 - library(thread_pool)
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 - library(yall)
 
 
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F.2.17 library(option)
| dict_options/2 | Convert between an option list and a dictionary. | 
| merge_options/3 | Merge two option lists. | 
| meta_options/3 | Perform meta-expansion on options that are module-sensitive. | 
| option/2 | Get an Option from OptionList. | 
| option/3 | Get an Option from OptionList. | 
| select_option/3 | Get and remove Option from an option list. | 
| select_option/4 | Get and remove Option with default value. |