NAME
    m_delete - delete an index from a mapping

    SYNOPSIS
    mapping m_delete(mapping map, mixed index)

    DESCRIPTION
    Remove the entry with index 'index' from mapping 'map', and return the changed mapping. If the mapping does not have an entry with index 'index', the first argument is returned.

    SEE ALSO
    mappingp, mkmapping, m_indices, m_values, m_sizeof