What do all the column names mean in the SentimentAnalysis package's analyzeSentiment() function in R?

Question

If you used the analyzeSentiment function from SentimentAnalysis in R:

library(tm)
library(SentimentAnalysis)
cor <- VCorpus(VectorSource(c('testing sentiment', 'this is great'))
sent <- analyzeSentiment(cor)
names(sent)

The names of the columns are:

"WordCount", "SentimentGI", "NegativityGI", "PositivityGI", "SentimentHE", "NegativityHE", "PositivityHE", "SentimentLM", "NegativityLM", "PositivityLM", "RatioUncertaintyLM" "SentimentQDAP", "NegativityQDAP", "PositivityQDAP"

Other than wordcount, what do all these labels mean? I didn't see any definitions in the vignette or docs.