1.
Blocking tags - content of html tags listed here won't be filtered for matches. Glossary links will also never be included inside ,, , and [no-glossary] [/no-glossary] tags.
2.
Which terms match
When two different terms occur in one place, the longer one will be matched. This way, when you add definitions for 'code' and 'postal code', the phrase 'postal code' will show one definition, different than 'code' alone (of course 'machine code', if not defined, will still show only the definition of 'code'). This also applies when you change the match type (e.g. you can set 'postcode' and 'coder' to have different definitions, even though originally 'code' would match substrings).
If you don't want some text to be filtered for terms at all, enclose it with [no-glossary] [/no-glossary] tags. You can also choose not to inlude glossary links in specific html tags.
3.
If you'd like some tags not to include any glossary links, list them in Blocking tags instead of always enclosing them with [no-glossary]. Separate names of html tags (without < or > characters) with spaces.