Several words appear frequently throughout this document and they are defined here:
* '''“[[May|MAY]]”''' means that it is the user’s discretion as to whether a suggestion is followed or not.* '''“[[Should|SHOULD]]”''' means that there is very little, or no, excuse or reason not to follow that suggestion made. You may be questioned as to why you have not followed it.* '''“[[Must|MUST]]”''' means that it is an obligatory ruling. No excuses.