Fields
Names in CLEM expressions that are not names
of functions are assumed to be field names. You can write these simply
as Power, val27, state_flag,
and so on, but if the name begins with a digit or includes non-alphabetic
characters, such as spaces (with the exception of the underscore),
place the name within single quotation marks––for example,
'Power Increase', '2nd answer', '#101', '$P-NextField'.
Note: Fields that are quoted but undefined in the data set will be misread as strings.