Dynamic Tags

Dynamic tags can be used to insert dynamic data in form fields, e.g. the current date and time or the contents of the clipboard.

You can enable, disable and edit the dynamic tags and create your own ones on the Dynamic Tag Editor dialog:

The Dynamic Tag Editor can be accessed via the Advanced Settings dialog.
You may also open the Dynamic Tag Editor window directly if you copy+paste the following in your address bar and hit the Return/Enter key:
chrome://autofillforms/content/autofillFormsTagEditor.xul

To use a dynamic tag just insert it into the value field of a rule (see also Advanced Editor).
If the Field Rule of a rule matches a form field, the dynamic tags are replaced with their associated dynamic data before they're used to fill out the form field.

Each dynamic tag is associated with a tag code which is used to calculate the dynamic data. Tag codes are written in JavaScript.

Note:
To access the current browser window use Autofill Forms method this.getWin() instead of the window object. To access the current document loaded into the browser window use this.getDoc() instead of the document object.