Can we set character limit for rich text field
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Since there is no parameter to achieve this, we need to add this as a validation, explore on the options to remove the HTML tags either by using striphtml() or substitute() functions. Problem with using striphtml() is that it converts all tags to newline characters which will add extra characters to our resultset, take this into consideration as we cannot simply wrap substitute() on top to get rid of char(10)s as the actual text may contain them which we are not supposed to exclude.
validations: if( len(striphtml(local!data)) > 100, "Please enter less than 100 characters", "" )