optional clean level, either 0 for no-clean, default 1 to most strict 9 (see cln)
case
change case: 1 first letter uppercase and rest lowercase, 2 all letters lowercase, 3 all letters uppercase
flgdf
is xz a data frame?
na.rm
remove entries with NA data? (optional and logical)
Author
Antonio Rivero Ostoic
Details
This is a convenient function to change letters to uppercase and lowercase in a text for
argument 'case' in function cln, and it inherits values from this function for 'level',
'flgdf', and 'na.rm'.