| readColumnsFromTextFile | R Documentation | 
Ref: https://www.gastonsanchez.com/visually-enforced/how-to/2012/06/23/Read-file-by-columns/
readColumnsFromTextFile(filenm, cols = c(1), sep = ",", ...)
filenm | 
 str  | 
cols | 
 vectorInteger  | 
sep | 
 str  | 
... | 
 others for read.csv  | 
data.frame from read.csv
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