%modifier? t

The tab format item.

With no modifiers, this format item has the same effect as a tab character. However, this format item also permits the "s" modifier. The "s" modifier indicates that white-space stripping can be applied to this tab.

Usually, tab characters in an output action are intended to appear in the final OmniMark output. Use of the "s" modifier allows the programmer to avoid strings of tab characters that would otherwise be generated if successive output actions (perhaps from different parts of a program) happen to produce adjacent characters.