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Expression
FIELDLENX() Returns length of field
EXPBLOCK() Returns a codeblock to evaluate an expresson
FIELDTYPEX() Returns type of field
FIELDPOSX() Returns position of field named in expression
FIELDDECX() Returns decimals of field
PARSFIELD() Exracts the name of the field from an expression
BLANKREC() Blanks out a record
PARSALIAS() Exracts the name of the alias from an expression
WORKBLOCK() Returns a set-get block for field named in an expression
BLANKFIELD() Returns a blank value corresponding to a field
ISBLANKREC() Determines if a record is blank
ISFIELD() Determines if an expression is the name of a field
ISTHISAREA() Determines if expression is the name of a field in
this area
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