To indicate that our reference edition considers that it is necessary to seclude a text or a letter because it is spurious, erroneous, redundant, superfluous, a repetition, an interpolation, etc., we use braces (curly brackets): "with my song {song} I gladden hearts".

The <secl> tag includes these seclusions in the transmitted text. It has the following syntax:

<secl source="#editorquesea">texto que el editor seclude</secl>

The @source attribute is optional, but it is useful to specify it if our edition is based on more than one reference edition.

If the <secl> tag bypasses the nesting hierarchy (within a number of verses, for example), use the system described in Syntax of the Diacritical Marks, with the attribute @unit="secl" for the tag <milestone/>.