What do all the column names mean in the SentimentAnalysis package's analyzeSentiment() function in R?
The different dictionaries are in the documentation for the function: 

For example DictionaryHE is the "Dictionary with opinionated words from Henry’s Financial dictionary" (see DictionaryHE).

Example:

sentiment &lt;- analyzeSentiment(document)   # Document is a Corpus
sentimentData &lt;- sentiment$SentimentHE   # Generates analysis based on Henry's dictionary
plotSentiment(sentimentData) # Quick line plot of sentiment