References to PO catalogues are noted with the [% loc %] tag that may include parameters. Example:

[%|loc(list.name,list.host)%]Welcome to list %1 %2[%END%]

Few exceptions apart, templates cannot insert or parse a file given its full or relative path, for security reasons. Only the file name should be provided; the TT2 parser will then use the INCLUDE_PATH provided by Sympa to find the relevant file to insert/parse.

The qencode filter should be used if a template includes SMTP header fields that should be Q-encoded. Example:

[% FILTER qencode %]Message à modérer[%END%]

You can write different versions of a template file in different languages, each of them being located in a subdirectory of the tt2 directory. Example: /mail_tt2/fr_FR/helpfile.tt2.

Your templates can include custom parameters.