| addmissing | Adds elements in a list that are missing because they were... | 
| citations-defunct | This function is defunct. | 
| concat_todf | Concatenate author names, if present, used in other... | 
| crossref-defunct | Lookup article info via CrossRef with DOI. | 
| facetplos | Do faceted searches on PLOS Journals full-text content | 
| formatarticleurl | Format a URL for a specific article in a specific PLoS... | 
| full_text_urls | Create urls for full text articles in PLOS journals. | 
| highbrow | Browse highlighted fragments in your default browser. | 
| highplos | Do highlighted searches on PLOS Journals full-text content | 
| insertnones | Function to insert "none" character strings where NULL values... | 
| isocodes | Country names and FIPS codes | 
| journalnamekey | Get short keys for journals to use in searching specific... | 
| plosabstract | Search PLoS Journals abstracts. | 
| plosauthor | Search PLoS Journals authors. | 
| plosfields | PLoS API fields to use for searching/retreiving data. | 
| plosfigtabcaps | Search PLoS Journals figure and table captions. | 
| plos_fulltext | Get full text xml of PLOS papers given a DOI | 
| plossubject | Search PLoS Journals subjects. | 
| plostitle | Search PLoS Journals titles. | 
| plosviews | Search PLoS Journals by article views. | 
| plosword | Search results on a keyword over all fields in PLoS Journals. | 
| plot_throughtime | Plot results through time for serach results from PLoS... | 
| rplos | Connect with PLoS API data | 
| rplos-defunct | Defunct functions in rplos | 
| searchplos | Base function to search PLoS Journals | 
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