87c87
< // operation. The result is always in Ft.sf.
---
> // operation. The result is always in Ft_sf.
112c112
< // operation. The result is always in Ft.sf.
---
> // operation. The result is always in Ft_sf.
< // operation. The result is always in Ft.sf.
---
> // operation. The result is always in Ft_sf.
112c112
< // operation. The result is always in Ft.sf.
---
> // operation. The result is always in Ft_sf.