#include <text_output.h>void vfuncheader(char *fmt, ...);
This C function displays the name of a function in the output window. The
function header consists of ruler lines, the date and time, and the formatted
string specified by the fmt and subsequent arguments. These arguments
should be specified in the standard printf style. The header, after
formatting, must be less than 8192 bytes long.
vfuncheader title
This is the Tcl interface to the vfuncheader C function. It takes a single argument named title and uses this as the function title. The title must be less 8192 bytes long.