| Table | scan | Table containing the information of the latest tag |
| order | sort | |
| key | string | Key inside the tag |
| value | string | Value given to the key |
| index | scan | order |
| index | scankey | key order |
| Global keyword | string | Found keyword |
| Global keywstr | string | Found string in the code |
| Global scantag | string | Latest tag found |
| Global scantype | [EOF StartTag EndTag SingleTag] | |
| Global scanstring | string | String found |
| Routine | scankeyword | Scan keywords form the source file |
| Routine | do_scan | Scan the source for the next tag |
| expect | string | List of valid scan tags separated by spaces |
| Routine | initscan | Initialise the use of the scanner |
| file | string | The filename to use as the source file |
| Routine | scanpush | Change the source file but remember the old one |
| file | string | Filename to continue scanning |
| Routine | scanpop | Return to the previous file to scan |