This is a translation of the `ClassicalStandardPresentation` code in Magma,
which was written by Eamonn O'Brien and Charles Leedham-Green.
The translation is due to Giovanni De Franceschi, Alexander Hulpke (who is
the contact for bugs), and Madeleine Whybrow.

This work was supported in part by NSF Grant DMS-1720146, which is gratefully
 acknowledged.
