@| 1: type directive | 2: used flags (modes) | 3...: more parameters \BC | \C, \C | - \BC | \C, \C | - \BC | \C, \C | a reserved parameter, two parameters describing type and level of a preceeding list shift if any (0 otherwise, only provided in \I directives), two parameters describing type and level of a following list shift if any (0 otherwise, only provided in \I directives) \BC | \C, \C | (base)name of source file \BC | \C, \C | a reserved parameter, two parameters describing type and level of a preceeding list shift if any (0 otherwise, only provided in \I directives), two parameters describing type and level of a following list shift if any (0 otherwise, only provided in \I directives) \BC | \C, \C | - \BC | \C | stream name \BC | \C, \C | Headline level. The full headline title (tags stripped off), a short version of the title and a reference to an array of docstreams used in this chapter are provided additionally in the startup directive \I. (If no short title version (or "shortcut") was specified, an empty string is provided.) \BC | \C | number of levels to shift \BC | \C | number of levels to shift \BC | \C | a hash reference: key "file" provides the current source file name, key "line" the new line number \BC | \C, \C | A prefered startup number (defaults to 1). Two parameters describing type and level of a preceeding list shift if any (0 otherwise, only provided in \I directives), two parameters describing type and level of a following list shift if any (0 otherwise, only provided in \I directives) \BC | \C, \C | - \BC | \C | a list of strings \BC | \C, \C | First, the tag name, then a reference to a hash of tag options taken from the source, then the number of stream parts following for the body (0 means: no tag body). \I \BC | \C, \C | - \BC | \C, \C | - \BC | \C, \C | - \BC | \C | - \BC | \C | a hash reference: key "var" provides the variables name, key "value" the new value \BC | \C, \C | -