The ISC currently accepts either floating point expressions or
correct Maple syntax as input. However, for Maple syntax requiring too
long for evaluation, a timeout has been implemented.

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The Inverse Symbolic Calculator (ISC) uses a combination of lookup tables and
integer relation algorithms in order to associate a closed form representation with
a user-defined, truncated decimal expansion (written as a floating point expression).
The lookup tables include a substantial data set compiled by S. Plouffe both before
and during his period as an employee at CECM.

**Here are a few numbers which the Standard Lookup cannot handle,
but which the Advanced Lookup can find:**