Typically use of variables is as follows:

program variable |
meaning |

element | global element number. |

max_element | highest global element number. |

inod | global node number. |

max_node | highest global node number. |

inol | element node number. |

nnol | the number of element nodes. |

ipuknwn | primary unknown number. |

npuknwn | the number of primary unknowns. |

iuknwn | unknown number. |

nuknwn | the number of unknowns. |

tochnog 2001-09-02