Intrinsic functions.
ABS
ACOS
ANNUITY
ASIN
ATAN
CHAR
COS
CURRENT-DATE
DATE-OF-INTEGER
DAY-OF-INTEGER
E
EXP
EXP10
FACTORIAL
FRACTION-PART
INTEGER
INTEGER-OF-DATE
INTEGER-OF-DAY
INTEGER-PART
LENGTH
LOG
LOG10
LOWER-CASE
MAX
MEAN
MEDIAN
MIDRANGE
MIN
MOD
NUMVAL
NUMVAL-C
ORD
ORD-MAX
ORD-MIN
PI
PRESENT-VALUE
RANDOM
RANGE
REM
REVERSE
SIGN
SIN
SQRT
STANDARD-DEVIATION
SUM
TAN
UPPER-CASE
VARIANCE
WHEN-COMPILED