go doc

hi,
what am I missing,
go doc reports only F1 , not F2, code below:

// Package pokus blah blah blah...
package pokus

import (
	. "go-eco.googlecode.com/hg/eco"
)

// F1 returns data
func F1(data int) int {
	return data
}

// F2 returns something else
func StBool_S(data *Matrix) *Matrix {
	rows := data.R
	out := NewMatrix(rows, rows)
	for i := 0; i < rows; i++ {
		for j := i; j < rows; j++ {
			v := 1.0
			out.Set(i, j, v)
			out.Set(j, i, v)
		}
	}
	return out
}