.LP
Predefined constants recognized by the Khoros expression 
parser include:
.LP
.nf
\f(CW
pi        3.14159265358979323846     pi
pi_2      1.57079632679489661923     pi/2
pi_4      0.78539816339744830962     pi/4
sqrtpi    1.77245385090551602730     square root of pi
sqrt2     1.41421356237309504880     square root of 2
sqrt1_2   0.70710678118654752440     square root of 0.5
e         2.71828182845904523536     natural number e
log10e    0.43429448190325182765     common log of e
ln2       0.69314718055994530942     natural log of 2
ln10      2.30258509299404568402     natural log of 10
log2e     1.4426950408889634074      log base 2 of e (1/ln2)
deg      57.29577951308232087680     radians to degrees (180/pi)
gamma     0.57721566490153286060     Euler's constant
phi       1.61803398874989484820
maxfl     1.0e+38                    a large floating point value 
maxint    2147483647                 largest 32 bit integer value 
maxshort  32767                      largest 16 bit short value 
\fP
.fi
